AP Physics Chapter 9 Study Guide PDF

Name: Date: AP Physics 1. Two objects with equal mass are thrown with equal speed against a wall. One bounces back with the same speed with which it hit, while the other sticks to the wall. Which one experience...

Name: Date: AP Physics 1. Two objects with equal mass are thrown with equal speed against a wall. One bounces back with the same speed with which it hit, while the other sticks to the wall. Which one experiences a greater change in momentum? Why? Y)Du-nt2d bac(C V) +wjce as uctch as Sharon is driving her car along a straight road. If you double both the mass and the speed of her car, how does the magnitude of the momentum change? Üacreaz 3. When is the momentum conserved n an isolated system? When is kinetic energy conserved? aLvDå9 4. Michelle is standing still on ice skates on a friction!ess ice rink. Cindy throws a heavy book toward her. If Michelle want to maximize her speed after this collision, should she catch the object and hold onto it, or should she deflect it back to Cindy, volleyball-style? if IDacL , Of Plich.eILc t- be OJAd av ufbll be treaür de4(LU3 Lt hæuc 5. In a car crash in which a small car and a Hummer collide and stick together after the collision, what can you say about the momentum of each vehicle? What can you say about the total momentum of the system? LEO CBOVvvz d of S%S-tLAt)) conserved 6. A Honda Civic, a Jeep, and a monster truck begin accelerating from rest at the same time. The truck is the most massive and the Civic is the least massive. The net accelerating force on each vehicle is the same. After 8 seconds which car has the most amount of momentum? : D bccccu&c AJ- rest Jee/ truck an ka-ve at  7. In a collision between two unequal masses, which mass receives a greater magnitude of impulse? eacR hgccloe 8. Identical forces act for the same time on two different objects. What can you say about the change in momentum of the lighter object? The heavier object? fbfas, Sa-mz bo-IC\4 Sana Chante 9. Describe what happens in an inelastic collision. What is conserved, and what is not conserved? Co.lüd.c dc6rM * Kg jo "eecCccQ} awaSticlI 2 1 5bJ'eq% , 10. A 1.0-kg ball moving eastward at 3.0 m/s suddenly collides with and sticks to a 2.5-kg ball moving northward at 2.0 m/s. What is the magnitude of the momentum of this system just after the collision? 11. Alexis drops a 0.14-kg baseball from a height of 3.0 m above the ground. What is the magnitude M' 0, Il-{b3 of its momentum just before it hits the ground (ignoring air resistance)? O , (DQ dnouoaro) Il 07 2  12. Three objects are rnoving along a straight line as shown in the figure below. Taking the positive direction to be the right, what is the total momentumof the system? 5.00 m/s 4.00 m/s 2.00 m/s 7.00 kg 14.0 kg 5.00 kg Il 13. Aaron throws a soccer ball vertically downward with a speed of 0.250 m/$in a place where g = 9.8 m/s2. It takes 0.548 s to reach the ground. What is the magnitude of the momentum just before the ball hits the ground? The mass of the soccer ball is 0.43 kg. V, tat z 5qts) - L t % D,S 18s -2,L12 (Jou)twuaxd) 14. Chris throws a a 0.50-kg ball at the gym wall. The ball, traveling horizontally at 20 m/s, strikes the wail and rebounds at 18 m/s. What is the magnitude of the change in the momentum of the ball during the rebound? V'l% 20M/s *Does - a + did a rops a 150-g ball from a window that is 10 m above ground level. The ball experiences no significant air resistance as it falls. What is its momentum when it strikes the ground? ot 13t9 26 q QVI (JCard 3  a H 5t0) (10 V ) 0, Ht5M)s stationary position. The 16. Two ice skaters suddenly push off against one another starting from a does the 60-kg skater 45-kg skater acquires a speed of 0.425 m/s relative to the ice. What speed acquire relative to th ice? M21)tf -o, mls (PDVJ d'! re offon 17. The graph in the figure shows the x component F of the net force that acts for 10 s ona 00-kg crate. What is the change in the momentum of the crate during the 10 s that this force acts? 10 Is o * f 04b - SOS) -10 clicgv$on Of + 18. Jill swings her golf club with an average horizontal force of 1000 N on a 0.045-kg golf ball that is \ OOD initially at rest on the tee. Her club is in contact with the ball for 1.3 ms. What is the speed of the golf ball just as it leaves the tee? 0'0H5t3 D 0046% 19. Andy throws a 0.140-kg baseball with a velocity of 21.3 m/s. Laura strikes the ball with the bat with an average force of 5000 N, which results in a velocity of 32.0 m/s in the opposite direction from the original velocity. How long were the bat and ball in contact? F s-3v0DIJ -320M/s (O, MIS - 6000 wfM  20. A 1200-kg car, moving at 13.1 m/s suddenly collides with a stationary car of mass 1500 kg. If the two vehicles lock together, what is their combined velocity immediately after the collision? ( V)) (13. 5.62 m's 1600 (00t9 21. A 60-kg student jumps horizontally from a 150-kg raft with a speed of 1.7 m/s. The raft is initially at rest. What is the speed of the raft immediately after the jump if the water has no effect on the speed of the raft (i.e., ignore friction or forces from the water)? D 13blU,) ISD '9 (ix bpposi+e 22. A 12,000-kg box ar is coasting at 1.20 m/s along a horizontal track when it suddenly hits and couples with a stationa 15,000-kg boxcar. What is the speed of the cars just after the collision? D 0.533 (12000 15000%) 23. A 450-gram ball is traveling horizontally at 10.0 m/s to the left when it is suddenly struck 0, LIS horizontally by a bat, causing it to reverse direction and initially travel at 7.50 m/s to the right. If the bat produced an average force of 1250 N on the ball, for how long (in milliseconds) was it in -10 "Is contact with the bal? = (pt3 Å s