A bullet moving at 20 m/sec. strikes a wooden plank and penetrates 4 cm before coming to stop. The time taken to stop is

A bullet moving at 20 m/sec. strikes a wooden plank and penetrates 4 c

1.	A bullet moving at 20 m/sec. strikes a wooden plank and penetrates 4 cm before coming to stop. The time taken to stop is
Answer» 0.08 sec 0.16 sec 0.04 sec 0.004 sec Answer :D