In police practice, bullets od identical mass are fired towards a concrete qall at different speed. It is found that a bullet travelling horizontally at 200m per second can penetrate the wall by a distance of 01.m. 1.In penetrating the wall, the kinetic energy of the bullet decreases. Account for this 'energy loss'. 2.What distance can another bullet of the same mass moving at 240m per second penetrate in the wall? 3.Mass of a bullet is found to be 0.01 kg. What is the magnitude of retarding force applied to the bullet by the wall to stop it? Thank You For Your answer.