A rifle fires a(n) 3 g bullet with a muzzle

velocity of 370 m/s into a block of wood. The
bullet comes to rest after it has made a(n)
17 cm deep hole in the wood.
v
a
What is the magnitude of the average frictional force slowed the bullet?
Answer in units of N

1 answer

F=ma=ma=mv²/2s