Reference no: EM132574126

-A 150 g baseball is thrown toward home plate with a speed of 40.0 m/s. The batter hits the ball directly back at the pitcher with a speed of 50.0 m/s. What is the change in momentum of the ball? Round to the nearest tenth and include units.

-A 23g bullet travelling at 230m/s penetrates a 2.0kg block of wood and emerges cleanly out the other side traveling 170m/s. If the block is stationary on a frictioness surface, how fast does it move after the collision? Round to one decimal place and include units.

-What is the impulse when a test car traveling at 15 m/s strikes a cement wall at a force of 1,900,000 N if the impact lasts for 0.005 seconds? Round to the nearest whole number and include units.

-A 3 kg cart moves at 4 m/s. A 2 kg cart moves at 6 m/s. Which has greater magnitude of momentum?

a. The 2 kg cart because it is moving faster

b. The 3 kg cart because it has more mass

c. The momentum is the same

d. It depends on the direction each cart is moving