Question

A bullet moving with 10m/s hit the wooden plank. The bullets stops when penetrates

2 cm deep. Calculate the retardation of bullet

Answer 1

let u is the initial speed
v is the final speed
a is the retardation
and s is the distance coverd by bullet.
then
${v}^{2} = {u}^{2} \: + 2as$
there v=0
a=2500 m /s^2
if it helps you
can you mark it brainiest one!

Answer 2

Answer:

2500m/sec

hope it helps