Question

A bullet moving with velocity 100m/s penetrates through a wooden block and emerges from a block with velocity 10m/s. If the width of block is halved what would be the velocity of bullet after emerging from the block

Answer 1

Answer:

Explanation:

Using third equ.of motion v^2=u^+2as v=10m/s, u=100m/s, let t= 1sec acc.=-90m/s and put and solved S=55m and again Halved s=55/2 and put and solved v= 71.1m/s