Question

A bullet of mass $m$ moving with velocity $v$ strikes a suspended wooden block of mass $M$ and get embedded inside. If the block rises to a height $h$, the initial velocity of the block after collision will be

• A. $\sqrt{2gh}$
• B. $\frac{M+m}{m}\sqrt{2gh}$
• C. $\frac{m}{M+m}2gh$
• D. $\frac{M+m}{M}\sqrt{2gh}$

Answer 1

The correct option is A $\sqrt{2gh}$