Question

a bullet is fired on a wall with a velocity of 100 M per second if the bullet stops on a depth of 10 cm inside the wall then find the retardation produced by the wall.

Answer 1

u can use the formula of law of conservation of momentum

Answer 2

V= 100m/sec v^2 = u^2 + 2as , final velocity(v) = 0 , initial velocity (u) = 100m/sec , so, 0=10000 + 2*a*(0.1) , so retardation (a) = 50000m/sec^2