A bullet of mass 10 g leaves a rifle at an initial velocity of 1000 m/ and strikes the earth at the same level with a velocity cf 500 m/. The work done in joule overcoming the resistance of air will be
(a) 375
(b) 3750
(c) 5000
(d) 500
Correct option (b) 3750
Explanation:
Work done = change in kinetic energy of the body
