Answers
Work is done when a force acts upon an object to cause a displacement.
Answer: sliding across the floor
Related Questions
Which of the following best describes an ion? A. an electron B. an atom that is neutral C. an atom that is charged
Answers
Answer: An ion is an atom with a net positive or negative charge due to an unequal number of protons and electrons
A skateboarder jumps horizontally off the top of a staircase and lands at bottom of the stairs. The staircase has a horizontal length of 12.0 m, and the jump lasts 1.10s. We can ignore air resistance. What is the skater's vertical velocity upon landing? Round your answer to three significant digits.
Answers
Answer:
The vertical velocity of the skater upon landing is 10.788 meters per second.
Explanation:
Skateboarder experiments a parabolic movement. As skateboarder jumps horizontally off the top of the staircase, it means that vertical component of initial velocity is zero and accelerates by gravity, the final vertical speed is calculated by the following expression:
\(v = v_{o} + g\cdot t\)
Where:
\(v_{o}\) - Initial vertical speed, measured in meters per second.
\(v\) - Final vertical speed, measured in meters per second.
\(g\) - Gravitational acceleration, measured in meters per square second.
\(t\) - Time, measured in seconds.
Given that \(v_{o} = 0\,\frac{m}{s}\), \(g = -9.807\,\frac{m}{s^{2}}\) and \(t = 1.10\,s\), the final velocity of the skater upon landing is:
\(v = 0\,\frac{m}{s} + \left(-9.807\,\frac{m}{s^{2}} \right)\cdot (1.10\,s)\)
\(v = -10.788\,\frac{m}{s}\)
The vertical velocity of the skater upon landing is 10.788 meters per second.
Answer:
-10.8
Explanation:
Answer on Khan Academy
An object in motion slows down and comes to a stop. Use Newton’s first law of motion to explain why this happens.
Answers
Answer:
Newton's first law states that an object that is in rest or in motion will stay at rest or in motion until acted upon a unbalanced force. So when an object that is in motion wether it is slow or fast (it is in motion) and a unbalanced force makes it act in a different way than it is already and so which in this case it is making it stop
Explanation:
According to Newton's first law of motion, an object in motion will stay in motion unless it is restrained by an outside force. When an object slows down or stops, external forces on it, like friction or air resistance, are to blame for the object's loss of motion.
What is Newton's first law of motion?Newton's first law of motion states that an object in motion will remain in motion at a constant velocity and in a straight line unless acted upon by an external force. Similarly, an object at rest will remain at rest unless acted upon by an external force.
Here int he Question,
An object that is slowing down and coming to a stop, it is being acted upon by external forces that are causing it to lose its motion. These forces could be friction, air resistance, or any other opposing force that is acting on the object. As the object moves, these forces work to slow it down and eventually bring it to a stop.
For example, if a car is moving on a road, the friction between the tires and the road, as well as air resistance, will act to slow it down. The engine of the car provides the force necessary to overcome these opposing forces and maintain the car's motion. However, if the engine is turned off, the car will eventually slow down and come to a stop due to the opposing forces.
Therefore, Newton's first law of motion explains that an object in motion will continue to move unless acted upon by an external force. In the case of an object slowing down and coming to a stop, external forces such as friction or air resistance are acting upon the object, causing it to lose its motion.
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A block of mass 8 m can move without friction
on a horizontal table. This block is attached
to another block of mass 34 m by a cord that
passes over a frictionless pulley.
If the masses of the cord and the pulley
are negligible, what is the magnitude of the
acceleration of the descending block?
Answers
Answer:
Let M1 = 8 kg and M2 = 34 kg
F = M a = (M1 + M2) a
F = M2 g the net force accelerating the system
M2 g = (M1 + M2) a
a = M2 / (M1 + M2) g = 34 / (42) g = .81 g = 7.9 m/s^2
Hi
Please help on question asap if the answer is correct I'll rate you five stars a thanks and maybe even brainliest!
What do you notice about the values?
0.9 amps ÷0.03v=30 ohms.
1.9amps÷0.07v=27.149 ohms
3.1. amps ÷0.10v =31 ohms
3.9. amps ÷ 0.12v =032.5 ohms
5. amps ÷0.15v=33.33 ohms
6.1. amps ÷0.19v=32.1053 ohms
Answers
The resistance values from the givens are having a consistent value ranging from 27 to 33 ohms depending upon the supply of voltage and current.
Ohm's law gives the relation between the voltage, current, and resistance. Ohm's law states that the applied voltage is directly proportional to the current flow in the conductor. Thus, V∝I, V is the voltage and I is the current.
Ohm's law can also be written as, V = IR, where R is the resistance and the unit of resistance is ohm. The resistance is the factor that resists or opposes the current flow in the curcuit. When resistance increases, current flow in the circuit decreases and vice-versa.
From the given values, the resistance values changes when there is a change in voltage and current. The current and voltage have linear relationship, and these calculations make the idealsitic assumptions and can not hold true in practical applicaitons, when woeking with non-ohmic or non-linear components.
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How do you calculate the average velocity of mercury as it orbits the sun?
Answers
Answer:Hope this helps!!!!!
Explanation:
People are fascinated with high-speed travel. A Boeing 747 flies at about 550 miles per hour. The Concorde Supersonic Transport flew over twice as fast at about 1350 miles per hour. That is impressively fast, but consider the speeds that we passengers on planet Earth always travel. The circumference of the Earth at the equator is 24900 miles and the residents of the tropic areas travel that distance every 24 hours. They are traveling over a thousand miles an hour. At 38° latitude we are traveling about 820 miles per hour. That is quite impressive but it pales in comparison with the orbital speed of the Earth, The average distance of the Earth from sun is 93.5 million miles. This means that in 365.25 days the Earth travels 587.5 million miles. This works out to about 67 thousand miles per hour. This is the speed we travel 24 hours a day, 365.25 days a year.
The orbital velocity is 2πR/T where R is the average radius of the orbit and T is the length of the year. The orbital velocity of a planet relative to that of Earth's is then the relative radius divided by the relative length of the year.
A student is measuring the density of a liquid. He places a measuring cylinder on a balance and records its mass. He then pours liquid into the cylinder and records the new reading on the balance. He also records the volume of the liquid.
Mass of empty cylinder = 147 g
Mass of cylinder + liquid = 203 g
Volume of liquid = 59 cm³
Using the results shown, calculate the density of the liquid.
Answers
Answer:
0.95g/cm3
Explanation:
sorry I did it in a rough paper.
Claudia stubs her toe on the coffee table with a force of 100. N. a) What is the
acceleration of Claudia's 1.80-kg foot? b) What is the acceleration of the table
if it has a mass of 20.0 kg? (Ignore any frictional effects.) c) Why would
Claudia's toe hurt less if the table had less mass?
Answers
Answer:
A.) acceleration= 55.6m/s^2
B.) acceleration of table= 5.0m/s^2
C.) More acceleration
Explanation:
A.) 100N/1.8kg= -55.6
B.) 100N÷20kg= 5
C.) Because since the table would have less mass, it would have had to accelerate more
The acceleration of Claudia's foot is 55.56 m/s². The acceleration of the table is 5 m/s². If the table had less mass then its acceleration will be less and Claudia's toe hurt less.
What is acceleration?Acceleration can be described as the rate of change of velocity with respect to time. Acceleration is a vector quantity with both magnitude and direction. Acceleration is also the second derivative of position w.r.t. time and the first derivative of velocity w.r.t. time.
According to the second law of Newton, the force is equal to the product of mass and acceleration.
F = ma
or, a = F/m
Given, the force with which Claudia stubs her toe on the coffee table,
F = 100N
The mass of Claudia's foot = 1.80 Kg
The acceleration of the Claudia's foot = 100/1.50 = 55.56m/s²
The mass of the table = 20 Kg
The acceleration of the table = 100/20 = 5 m/s²
The acceleration of any object is inversely proportional to its mass. If the table had less mass then its acceleration will be less and it would less hurt Claudia's toe.
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In the study of personality, what model includes different traits that underlie one’s basic tendencies
Answers
In the study of personality, the Five-factor model includes different traits that underlie one’s basic tendencies.
What is the Five-factor model?The Five-factor model is a scientific theory that states traits of the personality of an individual are due to its biology and therefore they respond to adaptations, which are central in the biology field.
In conclusion, in the study of personality, the Five-factor model includes different traits that underlie one’s basic tendencies.
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The archerfish uses a remarkable method for catching insects sitting on branches or leaves above the waterline. The fish rises to the surface and then shoots out a stream of water precisely aimed to knock the insect off its perch into the water, where the archerfish gobbles it up. Scientists have measured the speed of the water stream exiting the fish's mouth to be 3.7 m/s. An archerfish spots an insect sitting 18 cm above the waterline and a horizontal distance of 28 cm away. The fish aims its stream at an angle of 39° from the waterline.
Required:
Determine the height above the waterline that the stream reaches at the horizontal position of the insect.
Answers
Answer:
The fish gobbles the mosquito at height 18 cm.
Explanation:
Initial velocity, u = 3.7 m/s
horizontal distance, d = 28 cm
Angle, A = 39 degree
Let the time is t.
Horizontal distance = horizontal velocity x time
d = u cos A x t
0.28 = 3.7 cos 39 x t
t = 0.097 s
Let the height is h.
Use the second equation of motion
\(h =u t-0.5 gt^2\\\\h= u sin A t - 0.5 gt^2\\\\h= 3.7 sin 39 \times 0.097 - 0.5\times 9.8\times 0.097\times0.097\\\\h =0.226 -0.046 \\\\h=0.18 m=18 cm\)
Heredity is best described as th-
Answers
Explanation:
The most established layers are on the base, and the most youthful layers are on the top. Since dregs here and there incorporate once-living creatures, sedimentary stone regularly contains a great deal of fossils. Fossils are once living beings that have been transformed into rock, fit as a fiddle or type of the creature can in any case be seen.
What is Moral subjectivism?
Answers
Answer:
What Is Moral Subjectivism? Moral subjectivism is based on an individual person's perspective of what is right or wrong. An individual can decide for themselves that they approve or disapprove of a certain behavior, and that is what determines if the behavior is right or wrong.
A uniform beam having a mass of 60 kg and a length of 2.8 m is held in place at its lower end by a pin. Its upper end leans against a vertical frictionless wall as shown in the figure. What is the magnitude of the force the pin exerts on the beam?
Select one:
a.
0.68 kN
b.
0.57 kN
c.
0.74 kN
d.
0.63 kN
e.
0.35 kN
Answers
The magnitude of the force the pin exerts on the beam is approximately A, 0.6 kN.
How to determine magnitude?To determine the magnitude of the force the pin exerts on the beam, analyze the forces acting on the beam.
Considering the equilibrium of the beam, the forces acting on it include:
The weight of the beam acting downward (Wb = mass × acceleration due to gravity).
The normal force exerted by the pin acting upward (N).
The force exerted by the wall acting perpendicular to the wall (F).
Since the beam is in equilibrium, the sum of the vertical forces must be zero. This gives us the equation:
N - Wb = 0
The weight of the beam can be calculated as follows:
Wb = mass × acceleration due to gravity
Wb = 60 kg × 9.8 m/s²
Substituting the values into the equation:
N - (60 kg × 9.8 m/s²) = 0
Solving for N, the normal force exerted by the pin:
N = 60 kg × 9.8 m/s²
Calculating the value:
N ≈ 588 N
Converting the value to kilonewtons (kN), divide by 1000:
N ≈ 0.588 kN
Therefore, the magnitude of the force the pin exerts on the beam is approximately 0.588 kN.
The closest option from the given choices is (a) 0.68 kN.
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What gauge pressure is required in the city water mains for a stream from a fire hose connected to the mains to reach a vertical height of 15.0 m
Answers
Answer:
The gauge pressure is equal to 147 kPa.
Explanation:
The pressure exerted by fluid is given by :
\(P=\rho gh\)
Where
\(\rho\) is density of water
h is height
So, put all the values,
\(P=1000\times 9.8\times 15\\\\P=147000\ Pa\)
or
P = 147 kPa
So, the gauge pressure is equal to 147 kPa.
Answer:
The gauge pressure is 147000 Pa.
Explanation:
Height, h = 15 m
density of water, d= 1000 kg/m^3
gravity, g = 9.8 m/s^2
The gauge pressure is the pressure exerted by the fluid.
The pressure exerted by the fluid is given by
P = h d g
P = 15 x 1000 x 9.8 = 147000 Pa
suppose we are told that the acceleration a of a particle moving with uniform speed v in a circle of radius r is proportional to some power of r, say rn, and some power of v, say vm. determine the values of n and m and write the simplest form of an equation for the acceleration. solution write an expression for a with a dimensionless constant of proportionality k. (use the following as necessary: v, r, k, n, and m.)
Answers
The value of n is must (-2) and the value of m is must (-1) and (kv²/r) is the simplest form of an equation for the acceleration.
Suppose someone told us that a particle moving at a constant speed v around a circle with a radius r experiences an acceleration a that is proportional to the product of a power of r, say rn, and a power of v, say vm. Write the equation for the acceleration in its simplest form after determining the values of n and m.
The equation for the acceleration of a particle moving in a circle of radius "r" with uniform speed "v" can be derived from the formula for centripetal acceleration, which is given by:
= a
= v²/r
Since, we are told that the acceleration is proportional to some power of "r" and some power of "v":-
= a
= \(kr^nv^m\)
here,
"k" is proportionality constant.
= da/dt
= \(d(k.r^n.v^m) / dt\)
Since the speed "v" is constant, its derivative with respect to time is zero. Hence,
= da ÷ dt
= \(d(k.r^n) / dt.v^m\)
Since, the acceleration "a" is equal to the derivative of speed with respect to time, we have:-
= a
= d(v) ÷ dt
= \(d(k.r^n) / dt.v^m\)
Dividing both sides by "\(v^m\)", we get:
= a/ \(v^m\)
= \(d(k.r^n) / dt\)
Since the speed "v" is constant, the left side of the equation is also constant. Hence, the derivative of the right side with respect to time must also be zero.
= \(d(a/v^m)/dt\)
=\(d[d(k.r^n) / dt] / dt\)
Since the derivative of the right side with respect to time is zero, we have:
= \(d(a / v^m) / dt\)
= 0
Therefore, we can conclude that "n" must equal -2 and "m" must equal -1. Adding these values back into the original equation, we get:
= a
= \(k.r^-^2 * v^-^1\)
Arranging the terms, the simplest form of the equation for the acceleration:
= a
= k.v²/r
This is the equation for centripetal acceleration, which is proportional to the square of the speed and inversely proportional to the radius of the circle.
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According to the table what was the hikers total displacement the graph has 4km 6km 4km 6km
Answers
Answer:
0
Explanation:
0 is the answer
a 2.00 kg object is moving east at 4.00 m/s when it collides with a 6 kg object that is initially at rest. after the collision the larger object moves east at 1 m/s. what is the final velocity of the smaller object after the collision
Answers
The final velocity of the smaller object is 1 m/s.
To calculate the final velocity of the smaller object, we use the formula below.
Formula:
mu+m'u' = mv+m'v'............. Equation 1Where:
m = mass of the bigger objectm' = mass of the smaller objectu = initial velocity of the bigger objectu' = initial velocity of the smaller objectv = final velocity of the bigger objectv' = final velocity of the smaller object.From the question,
m = 6 kgm' = 2 kgu = 0 m/s (at rest) u' = 4 m/sv = 1 m/sSubstitute these values into equation 1
6(0)+2(4) = 6(1)+2(v')8 = 6+2v'2v' = 8-62v' = 2v' = 1 m/sHence, The final velocity of the smaller object is 1 m/s.
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What is the frequency of light that has a wavelength of 682 nm? Round to 3 sig figs and put your answer in scientific notation (e.g. 6.11E14). (note: the velocity of light is 3.0E8 m/s) Hz
Answers
Answer:
439.6 THz
Explanation:
A wagon with a mass of 30kg is accelerated across a level surface at 2.4 m/s^2. What net forces acts on the wagon?
Answers
Answer:
72 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 30 × 2.4
We have the final answer as
72 NHope this helps you
The objective lens and the eyepiece of a microscope are 16.5 cm apart. The objective lens has a magnification of 64× and the eyepiece has a magnification of 10 ×. Assume that the image of the objective lies very close to the focal point of the eyepiece.
Part A) Calculate the overall magnification of the microscope.
Part B) Calculate the focal length of the eyepiece.
Part C) Calculate the focal length of the objective.
Answers
M = M_objective x M_eyepiece
M = 64 x 10
M = 640
Therefore, the overall magnification of the microscope is 640×.
Part B) The magnification of the eyepiece is given by:
M_eyepiece = f_objective / (f_objective + d)
where f_objective is the focal length of the objective lens, and d is the distance between the objective lens and the eyepiece. Since the image of the objective lies very close to the focal point of the eyepiece, we can assume that d is equal to the focal length of the eyepiece, which we will denote as f_eyepiece. Substituting these values into the equation above, we get:
10 = f_objective / (f_objective + f_eyepiece)
We can rearrange this equation to solve for f_eyepiece:
f_eyepiece = f_objective / 10 - 1
The magnification of the objective lens is given by:
M_objective = f_eyepiece / (f_eyepiece - d)
Substituting the value of d, we get:
M_objective = f_eyepiece / (f_eyepiece - f_eyepiece)
M_objective = 1
Therefore, the magnification of the objective lens is 1×. We can use this value to solve for f_objective:
M = M_objective x M_eyepiece
640 = 1 x 10 x (f_objective / (f_objective + f_eyepiece))
Substituting the expression for f_eyepiece that we derived earlier, we get:
640 = 10 x f_objective / (f_objective / 9)
640 = 90
Solving for f_objective, we get:
f_objective = 14.06 cm
Therefore, the focal length of the objective lens is 14.06 cm.
A weightlifter lifts a weight of 500 N from the ground over her head, a distance of 1.8 m. How much work has been done to move the weight?
Answers
Hope this helps c:
A 3.20 kg fish is attached to the lower end of a vertical spring that has negligible mass and force constant 850 N/m . The spring initially is neither stretched nor compressed. The fish is released from rest.What is its speed after it has descended 0.0490 m from its initial position?
Answers
The speed of the spring from its initial position is 0.8 m/s.
What is the speed of the spring?
The speed of the spring after it descended from the given position is calculated by applying the principle of conservation of energy.
K.E = U
¹/₂mv² = ¹/₂kx²
mv² = kx²
v² = kx² / m
v = √ ( kx² / m )
where;
k is the spring constantx is the extension of the springm is the mass of the fishThe speed of the spring after descending the given distance is calculated as;
v = √ ( 850 x 0.049² / 3.2 )
v = 0.8 m/s
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The following images show five planets in our solar system. rank these planets from left to right based on their average surface (or cloud-top) temperature, from highest to lowest. (not to scale.)
Answers
The order of the average surface temperature of the given planets as Mercury, Earth, Mars, Jupiter, and Neptune based on their distance from the sun.
What is the solar system?The Solar System can be described as the gravitationally bound system of the Sun and the plants are the objects that orbit it. The solar system is formed 4.6 billion years ago from the gravitational collapse of a giant interstellar cloud.
Most of the mass of the solar system is contained in the Sun and the remaining mass is in the planet Jupiter. The four inner planets Mercury, Venus, Earth, and Mars are terrestrial planets, made primarily of rock and metal.
The two largest planets Jupiter and Saturn, are gas giants, made mainly of hydrogen and helium. The next two, Uranus and Neptune, are ice giants, made of volatile substances with hydrogen and helium, such as ammonia, water, and methane.
The average surface temperature of Mercury is 333°F (167°C), Earth 59°F (15°C), Mars -85°F (-65°C), Jupiter -166°F (-110°C), and Neptune -330°F (-200°C)
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A runner whose initial speed is 29 km/h increases her speed to 31 km/h in
order to win a race. If the runner takes 5.0 seconds to complete this
increase in her speed, what is her acceleration?
Answers
The rate of change in velocity is known as acceleration.She thereby accelerated 0.027 m/s2 throughout her strong effort.
What is her acceleration?The rate of change in velocity is known as acceleration.Acceleration typically signals a change in speed, though this is not always the case.
Because of the shifting direction of its velocity, an item moving on a circular path at a constant speed is still accelerating. The change in velocity divided by the time interval during which that change happened is the definition of acceleration (in its simplest form).
The formula is: a= v2 - v1 /t
Where:
Initial velocity is v1.
v2: final speed
t: the amount of time required for that acceleration
introducing the specified values into the equation
a=0.027 m/s2
where
a = 3.5 m/s - 31 m/s /15 m/s
She thereby accelerated 0.027 m/s2 throughout her strong effort.
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4. At the top of a hill, a moving 4 kg ball has 15 J of kinetic energy. Towards the
bottom of the hill, the ball has 70 J of kinetic energy and 5 J of potential energy.
How tall is the hill?
Answers
The height of the hill is approximately 0.128 meters.
The total energy of the ball at the top of the hill is equal to its kinetic energy:
E_top = K = 15 J
At the bottom of the hill, the total energy of the ball is the sum of its kinetic and potential energies:
E_bottom = K + U = 70 J + 5 J = 75 J
The potential energy of the ball at the top of the hill is zero, since it is at the highest point. Therefore, the potential energy at the bottom of the hill is:
U = E_bottom - K = 75 J - 70 J = 5 J
The potential energy of an object at a height h is given by:
U = mgh
where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s^2), and h is the height. Rearranging this equation gives:
h = U/(mg)
Substituting the values given in the problem, we get:
h = 5 J / (4 kg * 9.8 m/s^2) ≈ 0.128 m
Therefore, the height of the hill is approximately 0.128 meters.
What is kinetic energy?
Kinetic energy is the energy possessed by a moving object due to its motion. It is defined as the energy an object has by virtue of its motion, and is directly proportional to the mass of the object and the square of its velocity (speed).
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FIGURE 2 shows that a solid, frictionless cylindrical pulley with the radius 0.33 m is used to draw water from a well. A bucket of mass 1.53 kg is attached to a cord that is wrapped around the cylinder. We assume the cord has negligible mass and does not stretch or slip the pulley. Given that the moment of inertia of the pulley is 0.385 kg m².
(a) Calculate the angular acceleration a of the pulley and the linear acceleration a of the bucket.
(b)Determine the tension in the cord.
Answers
The angular acceleration a of the pulley and the linear acceleration a of the bucket are 12.85 rad/s² and 4.24 m/s² respectively.
The tension in the cord is 6.49 N.
What is angular acceleration?The angular acceleration of an object is the rate of change of angular velocity with time.
Apply the principle conservation angular momentum to determine the angular acceleration of the pulley.
τ = Iα
Fr = Iα
mgr = Iα
α = mgr/I
where;
m is mass of the bucketg is acceleration due to gravityr is the radius of the pulleyI is moment of inertia of the pulley.α = (1.53 x 9.8 x 0.33) / (0.385)
α = 12.85 rad/s²
The linear acceleration of the pulley is calculated as follows;
a = αr
a = 12.85 rad/s² x 0.33 m
a = 4.24 m/s²
The tension in the cord is calculated as follows;
T = ma
T = 1.53 kg x 4.24 m/s²
T = 6.49 N
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1 /B 1 B 1 1/ Q B A A space ship, initially traveling at constant velocity along a straight line, decides to switch course. It first fires it's engine at full power for a very short time in the direction perpendicular to its trajectory at point A, giving it an instantaneous large boost. Then at point B, it fires its engine continuously at a much lower power in the opposite direction until it reaches point C. Which of the following trajectories most closely represent the trajectory of the ship? R Search listening t... KWFinder: Keywor... A space ship, initially traveling at constant velocity along a straight line, decides to switch course. It first fires it's engine at full power for a very short time in the direction perpendicular to its trajectory at point A, giving it an instantaneous large boost. Then at point B, it fires its engine continuously at a much lower power in the opposite direction until it reaches point C. Which of the following trajectories most closely represent the trajectory of the ship? Pick the correct answer 0 1 g 2 O 3 o 4 o 5 Submit
Answers
The spaceship undergoes an instantaneous change in velocity at point A and then undergoes a continuous change in velocity at point B until it reaches point C. The trajectory of the spaceship is therefore curved and can be represented by one of the given options.
What is Instantaneous Velocity?
Instantaneous velocity is the velocity of an object at a specific moment in time or at a specific point in its motion. It is the limit of the average velocity as the time interval over which it is calculated approaches zero. In other words, it is the slope of the tangent to the position-time graph at a particular point.
To calculate the instantaneous velocity of an object, you need to determine the object's position at a specific moment in time and then take the derivative of the position function with respect to time. The resulting derivative gives you the object's instantaneous velocity at that specific moment in time.
Instantaneous velocity is important in physics and many other fields because it allows us to understand the behavior of objects in motion and to calculate important quantities such as acceleration, momentum, and energy.
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Which is more dense a Large log, or a small pebble?
Answers
A cart of mass 4.0 kg is being pulled with a force of 24 N. The cart accelerates at 3.0 m s-2. What is the net force on the cart?
Answers
Answer:
waitt in comments... .................
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