Question

A bullet of 0.06kg travelling at 120m/s penetrates into a fixed target and is brought to rest in 0.01s. The distance through which it penetrates is:
Answer is 60cm

Answer 1

average velocity = (initial + final) / 2 = (120 + 0) / 2 = 60 m/s

distance = velocity * time = 60 m/s * 0.01 s

Answer 2

Tnx a lot
I am grateful