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Rifle recoil speed homework

  • #1

Homework Statement



A rifle has amass of 4.5 kg and it fires a bullet of mass 10 g at a muzzle spped of 820m/s what is the final recoil speed of the rifle as the bullet leaves the gun barrel?

Homework Equations



conservation laws

The Attempt at a Solution


4.5v=1000*820
v=1.8*10^5
 

Answers and Replies

  • #2
370
0


What? 0.0 The mass of the bullet is 10 grams, not 1000 kg. =D

Be consistent with your units, but your method is sound, I suggest converting your grams in kilograms.
 

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