# Question: When bunting a baseball player uses the bat to change

When bunting, a baseball player uses the bat to change both the speed and direction of the baseball.

(a) Will the magnitude of the change in momentum of the baseball before and after the bunt be (1) greater than the magnitude of the momentum of the baseball either before or after the bunt, (2) equal to the difference between the magnitudes of momenta of the baseball before and after the bunt, or (3) equal to the sum of the magnitudes of momenta of the baseball before and after the bunt? Why?

(b) The baseball has a mass of 0.16 kg; its speeds before and after the bunt are 15 m/s and 10 m/s, respectively; the bunt lasts 0.025 s. What is the change in momentum of the baseball?

(c) What is the average force on the ball by the bat?

(a) Will the magnitude of the change in momentum of the baseball before and after the bunt be (1) greater than the magnitude of the momentum of the baseball either before or after the bunt, (2) equal to the difference between the magnitudes of momenta of the baseball before and after the bunt, or (3) equal to the sum of the magnitudes of momenta of the baseball before and after the bunt? Why?

(b) The baseball has a mass of 0.16 kg; its speeds before and after the bunt are 15 m/s and 10 m/s, respectively; the bunt lasts 0.025 s. What is the change in momentum of the baseball?

(c) What is the average force on the ball by the bat?

**View Solution:**## Answer to relevant Questions

A car with a mass of 1500 kg is rolling on a level road at 30.0 m/s. It receives an impulse with a magnitude of 2000 N ∙ s and its speed is reduced as much as possible by an impulse of this size. (a) Was this impulse ...A 0.45-kg piece of putty is dropped from a height of 2.5 m above a flat surface. When it hits the surface, the putty comes to rest in 0.30 s. What is the average force exerted on the putty by the surface? In a simulated head-on crash test, a car impacts a wall at 25 mi/h (40 km/h) and comes abruptly to rest. A 120-lb passenger dummy (with a mass of 55 kg), without a seatbelt, is stopped by an air bag, which exerts a force on ...A cherry bomb explodes into three pieces of equal mass. One piece has an initial velocity of 10 m/s x-bar. Another piece has an initial velocity of 6.0 m/s x-bar – 3.0 m/s y-bar. What is the velocity of the third piece? For a movie scene, a 75-kg stuntman drops from a tree onto a 50-kg sled that is moving on a frozen lake with a velocity of 10 m/s toward the shore. (a) What is the speed of the sled after the stuntman is on board? (b) If ...Post your question