Answered: Calculate the recoil velocity of the…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter8: Linear Momentum And Collisions

Section: Chapter Questions

Problem 38PE: A 0.0250-kg bullet is accelerated from rest to a speed of 550 m/s in a 3.00-kg rifle. The pain of...

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A 0.0295 kg bullet is accelerated from rest to a speed of 575m in a 3.05kg rifle. The pain of the rifle’s kick is much worse if you hold the gun loosely a few centimetres from your shoulder rather than holding it tightly against your shoulder.

a) Calculate the recoil velocity of the rifle if it is held loosely away from the shoulder.

b) How much kinetic energy does the rifle gain?

c) What is the recoil velocity if the rifle is held tightly against the shoulder, making the effective mass 27.5 kg?

d)How much kinetic energy is transferred to the rifle-shoulder combination? The pain is related to the amount of kinetic energy, which is significantly less in this latter situation.

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