The Shot of a Rifle

  • Thread starter atse1900
  • Start date
  • #1
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A 5.0 g bullet leaves the muzzle of a rifle with a speed of 320 m/s, What force (assumed constant) is exerted on the bullet while it is traveling down the .82 m long barrel of the rifle?

This is what I have so far. : [.

(320)^2/(2*.82)=t

320/t=a

a= 62439

62439*.005
=312

The back of the book is 310. What did I do wrong?
 

Answers and Replies

  • #3
217
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probably because the book gives answers in significant figures?
 

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