A 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure). The bullet penetrates the block and comes to rest in it in a time interval of 0.0010 s. Assume the force on the bullet is constant during penetration and that air resistance is negligible. What is the initial kinetic energy of the bullet ?

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter6: Momentum, Impulse, And Collisions
Section: Chapter Questions
Problem 3P: A pitcher claims he can throw a 0.145-kg baseball with as much momentum as a 3.00-kg bullet moving...
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例題:
A 15-g bullet is shot vertically into an 2-kg block.
The block lifts upward 8.0 mm (see the figure).
The bullet penetrates the block and comes to rest
in it in a time interval of 0.0010 s. Assume the
force on the bullet is constant during penetration
and that air resistance is negligible. What is the
initial kinetic energy of the bullet ?
V.
Transcribed Image Text:例題: A 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure). The bullet penetrates the block and comes to rest in it in a time interval of 0.0010 s. Assume the force on the bullet is constant during penetration and that air resistance is negligible. What is the initial kinetic energy of the bullet ? V.
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