Bullet fired at a block

  • Thread starter rdesio
  • Start date
  • #1
1
0

Homework Statement



A 20-g bullet is fired into a 2.0-kg block of wood placed on a horizontal surface. The bullet stops in the block. The impact moves the block (+ bullet) a distance of 5 m
before it comes to rest. If the coefficient of kinetic friction between the block and
surface is 0.25, calculate the speed of the block (+ bullet) system immediately after
impact.

Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
1,255
3
Welcome to physics forums rdesio. You need to give the problem a try before we can help; or at least let us know what exactly you're having trouble with or confused about.

Some pointers:
What are the key ideas at play in this problem?
Why does the block and bullet stop at some point? What made them start moving in the first place? Is anything conserved throughout the process?
 
  • #3
Try using the total energy before is equal to the total energy after equation.
 
  • #4
Show some attempt...........................
 

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