Question

A bullet of mass 30 g and moving with a velocity x hits a wooden target with a force of 187.5 N. If
the bullet penetrates 80 cm, find the value of x.

Answer 1

1/2 mv^2 =f.d then 1/2 30×10^-3 x^2 = 187.5 × .8 so x is equal to 100 m/ sec