A 1-kg iron ball and a 10-kg iron ball are dropped from rest from the top of a one-story building. When hitting the ground below, compared with the 1-kg ball, the 10-kg ball has A. Less momentum and KE. B. The same momentum and KE. C. 10 times as much momentum and 10 times as much KE. D. 10 times as much momentum and 100 times as much KE.

12. A 10kg toy truck moves at 5m/s East. It collideds head-on with a 5kg toy car moving 10m/s West. What is the total momentum of the system?

A 5.0-kg hot rod car moving at 2.0m/s slams into a 4.0-kg hot rod car at rest. The speed of the two cars stuck together after colliding is? a. 1.1 m/s b. 1.5 m/s c. 2.5 m/s d. none of the above

12. What will happen to the colliding bodies in a completely inelastic collision? A stick together and move as one body after collision and the initial kinetic energy is greater than the final kinetic energy B. bounce away from each other after collision and the initial kinetic energy is equal to the final kinetic energy C. both stopped at the collision point and both momentum and total kinetic energy are conserved D. maintains its initial velocity after colliding and neither momentum nor KE is conserved 13. In the figure, determine the character of 1 the collision. The masses of the blocks and the velocities before and after are being given. The collision is A. elastic C. Inelastic 02 m B. characterized by an increased in KE D. not possible because P is not conserved 14. A 1500-kg car is traveling south, and a 2000-kg SUV is traveling west. The total momentum of the system consisting of the two cars is 8000 kg m is directed 60,00 west of south. The speed of the car in m/s is A. 2.19…

The momentum of an isolated system is conserved Select one: a. only in inelastic collisions. b. only in elastic collisions. C. in both elastic and inelastic collisions.

On a level, frictionless air track, a 300-g puck traveling at 20.0 cm/s to the right undergoes a perfectly elastic head-on collision with a 500-g puck that is traveling to the left, directly toward the first puck, at 10 cm/s. What is the speed of the 500-g puck after the collision? a. 17.5 cm/s b. 22.5 cm/s c. 12.5 cm/s d. 20.0 cm/s e. 15.0 cm/s

E9. A ball traveling with an initial momentum of 4.0 kg•m/s bounces off a wall and comes back in the opposite direction with a momentum of -3.5 kg-m/s.a. What is the change in momentum of the ball?b. What impulse is required to produce this change? Answer with the correct formula. Fully solve the problem correctly.

1. Determine the momentum of a a. 60-kg halfback moving eastward at 9 m/s. b. 1000-kg car moving northward at 20 m/s. C. 40-kg freshman moving southward at 2 m/s

2. An object that has a small mass and an object that has a large mass have the same momentum. Which object has the larger kinetic energy? a. neither, they have the same kinetic energy b. the one with the small mass c. the one with the large mass

4. Jerome plays middle linebacker for South's varsity football team. In a game against cross-town rival North, he delivered a hit to North's 82-kg running back, changing his eastward velocity of 5.6 m/s into a westward velocity of 2.5 m/s. a. Determine the momentum change of the running back. b. Determine the impulse delivered to the running back.