Question

A bullet moving with velocity of 400m/s pierced through a 200cm wooden block. what is its retardation?​

Answer 1

Answer:

Correct option is C)

v

2

−u

2

=2as

0−(200)

2

=2a×4

⇒a=5000cm/s

2

Now initial velocity to travel 6 cm,

0−u

2

=−2×5000×6

⇒u=244.9cm/s