Friction Force - Bullet hitting a sandbag

  • Thread starter Kristenx2
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  • #1
Kristenx2
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Homework Statement


A rifle bullet with a mass of 15.5 g traveling toward the right at 262 m/s strikes a large bag of sand and penetrates it to a depth of 24.2 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.


Homework Equations


F⃗ net=ΣF⃗ =ma⃗, fkkN, [itex]\Sigma[/itex]F=n+f+mg=ma


The Attempt at a Solution


I have no idea where to start. I tried drawing a force diagram, but I can't figure out how to use my givens all in one equation.
 

Answers and Replies

  • #2
vela
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A force diagram is a good place to start. Can you describe what you have so far or scan it in and post it?
 

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