Question

a bullet initially moving with a velocity of 30m/s strikes a target and comes to rest after penetrating a distance of 0.02m in the target. calculate the retardation produced by the target

Answer 1

HERE
u=30m/s
v=0
s=0.02m
as we know that UxU=VxV+2as
30x30=0+2a x 0.02
900=a x 0.04
900/0.04=s. NOW U CAN SOLVE IT
I HOPE IT WILL HELP YOU.