Question

A bullet is fired into a walll with velocity of 50 ms if the bullet stops at a depth of 10 cm inside the wall find the retardation produce by the wall

Answer 1

using the formula v^2=u^2-2as
the bullet stops so v=0
0=50^2-2a(0.1m)
=>2500-0.2a=0
=>2a=25000
a=12500 m/s^2