AP Physics C Mechanics : Unit – 4 – Systems of Particles and Linear Momentum Practice Test
AP Physics C Mechanics : Unit – 4 – Systems of Particles and Linear Momentum Practice Test
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Question 1 of 19
1. Question
A sphere of mass M, radius r, and rotational inertia I is released from the rest at the top of an inclined plane of height h as shown below. If the plane is frictionless, what is the speed V cm of the center of mass of the sphere at the bottom of the incline?
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Question 2 of 19
2. Question
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Question 3 of 19
3. Question
In an elastic collision, what combination of quantities is conserved?
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Question 4 of 19
4. Question
In an inelastic collision, which combination of quantities is conserved?
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Question 5 of 19
5. Question
A sphere of mass M, radius r, and rotational inertia I is released from the rest at the top of an inclined plane of height h as shown below.
If the plane has friction so that the sphere rolls without slipping, what is the speed of the center of mass at the bottom of the incline?
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Question 6 of 19
6. Question
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Question 7 of 19
7. Question
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Question 8 of 19
8. Question
A light, ideal spring with a spring constant k = 100 N/m and uncompressed length L = 0.30 m is mounted to the fixed end of a frictionless plane inclined at an angle θ = 30°. Then a mass M 0.300 kg is affixed to the end of the spring and allowed to slowly slide down the plane until it is resting in an equilibrium position. Now, at a distance d = 0.30 m above x0, a second mass m = 0.200 kg is now placed, and released so that it slides down the ramp to collide with mass M as shown in the figure below. Calculate the speed of m just before it strikes mass M.
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Question 9 of 19
9. Question
A light, ideal spring with a spring constant k = 100 N/m and uncompressed length L = 0.30 m is mounted to the fixed end of a frictionless plane inclined at an angle θ = 30°. Then a mass M 0.300 kg is affixed to the end of the spring and allowed to slowly slide down the plane until it is resting in an equilibrium position. Now, at a distance d = 0.30 m above x0, a second mass m = 0.200 kg is now placed, and released so that it slides down the ramp to collide with mass M as shown in the figure below.Determine the speed of mass M and m just after they stick together in a perfectly inelastic collision.
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Question 10 of 19
10. Question
A 3.0 kg steel ball strikes a wall with a speed of 10 at an angle of 60° with the surface. It bounces off with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.20 s, what is the average force exerted on the wall by the ball?
4.5 x 102 N
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Question 11 of 19
11. Question
An air track glider of mass M is built, consisting of two smaller connected gliders with a small explosive charge located between them. The glider is traveling along a frictionless rail at 2 m/s to the right when the charge is detonated, causing the smaller glider with mass M, to move off to the right at 5 m/s. What is the final velocity of the second small glider?
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Question 12 of 19
12. Question
A force acting on an object varies as a function of time according to the equation F = k t², where k is a constant. If the object had an initial momentum of 0 at time t = 0, what is the momentum of the object at time t?
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Question 13 of 19
13. Question
A flat piece of metal of uniform density has the shape and dimensions shown here. The center of mass for the piece of metal is located at: Ans: xCM (cm); yCM (cm)
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Question 14 of 19
14. Question
A 500gram cart rolls with negligible friction along a straight flat track until it collides with a 750gram cart that was initially at rest. Positiontime data for the 500gram cart before it hits the other cart is recorded in the data table below. At time t = 2 seconds, the two carts collide in a perfectly inelastic collision. Calculate the final velocity of the 500gram cart after this collision.
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Question 15 of 19
15. Question
Object A has mass 1.0kg and initially moves to the right at 6.0 . It then collides with object B, which has mass 5.0kg and was initially moving to the right at 4.0 . If the two objects stick together after the collision, what percentage of the initial kinetic energy has been dissipated?
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Question 16 of 19
16. Question
There are two skaters. The male skater with mass 68kg travels 15 North. He approaches a 60kg female skater who is travel 12 east; they approach each other at right angles. When they meet, they hold on to each other. At what direction and speed do they move after they meet?
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Question 17 of 19
17. Question
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Question 18 of 19
18. Question
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Question 19 of 19
19. Question
If atom A moves at a constant velocity, v, toward atom B, which of the following is most likely to be true?
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