A bullet is fired on a wooden block. Its velocity reduces by 50% on penetrating 30 cm. How long will it penetrate further before coming to rest ?

Q: A bullet is fired on a wooden block. Its velocity reduces by 50% on penetrating 30 cm. How long will it penetrate further before coming to rest ?

(a) 30 cm

(b) 15 cm

(c) 10 cm

(d) 5 cm

Ans: (c)