Question

A bullet moving with 10 m/s hits a wooden plank. The bullet stops after penetrating the plank 2 cm deep. Calculate the retardation of the bullet.

Answer 1

Answers:

Let u is the initial speed

v is the final speed

a is the retardation

and s is the distance coverd by bullet.

then

there v=0

a=2500 m /s^2

Hopefully understandable ^-^