Question

A lead bullet of mass 20 g,travelling with a velocity of 350m/s , comes to rest after penetrating 40cm in a still target . Find :

(i) the resistive force offered by the target .

(ii)the retardation caused by it .

Answer 1

1.
F=ma= 20*350=700ms-1= 700*3600/1000=2520 N
2. Every force has equal opposite forece (Newton's Third law of force)