Q124 / 200 · NEET 2011 (Screening) · Physics

A body of mass $M$ hits normally a rigid wall with velocity $y$ and bounces back with the same velocity. The impulse experienced by the body is

A
$1.5 \mathrm{Mv}$
Correct answer
B
$2 \mathrm{Mv}$
C
zero
D
$M v$

Solution

Impulse $\begin{aligned} |J| & =|\Delta p| \\ & =M v-(-Mv) \\ & =2 Mv \end{aligned}$

Hence, the correct answer is option: 'B'.

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