Click to go back to home page CHAPTER FIVE

 

A 150-g baseball reaches a batter with a speed of 45 m/s (100 mph) and leaves the bat at 50 m/s in the opposite direction. If the impact lasted .001-s, find the force exerted on the ball. 1200 pounds 2200 pounds 3200 pounds 4200 pounds 5200 pounds	A .0060-kg bullet strikes a wooden block with a speed of 150 m/s. If the impact time lasted .0030-s, find the force of the bullet. 100 N 200 N 300 N 400 N 500 N	Find how far the bullet was imbedded into the wood from the previous problem. 20 cm 21 cm 22 cm 23 cm Not enough Information	How much farther would a bullet with twice the speed but half the mass embed itself into the wood from the previous problem? Assume the same impact time. Two times Three times Four times Five times Not enough Information	Which type of punch is more forceful, one with a bare fist or one with a boxing glove? Bare fist Boxing glove Same
A car with a certain mass slams into a car with twice the mass at rest. If they stick together after the collision, how does their final speed compare to the initial speed of the first car? 1/2 1/3 1/4 1/5 1/6	A 50-kg astronaut pushes on a 40-kg astronaut who flies off at +5.0 m/s. If they both started at rest, what is the first astronaut's velocity after the push? -5 m/s 4 m/s -4 m/s 6 m/s -6 m/s	Three astronauts, A, B, and C with the same mass and throwing strength decide to play catch with themselves in space. Astronaut A throws B towards C with a certain velocity. How many throws will Astronaut A and C make before the game is over? One Two Three Four Indefinite	A 400-kg car (car A) traveling at 30 mph strikes a 600-kg car at rest (car B) on an icy road. If the collision was nearly elastic, what was the velocity of car A and B? -10 mph, 20 mph 6 mph, 24 mph -6 mph, 24 mph 10 mph, 20 mph Not enough info	If the collision from the previous problem was completely inelastic, find the final speed of both cars. 10 mph 12 mph 14 mph 16 mph Not enough info