Laws Of Motion Ques 5
5. A body of mass $M$ hits normally a rigid wall with velocity $V$ and bounces back with the same velocity. The impulse experienced by the body is
[2011]
(a) $MV$
(b) $1.5 $ $\mathrm{MV}$
(c) $2 $ $\mathrm{MV}$
(d) zero
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Answer:
Correct Answer: 5.(c)
Solution: (c) Impulse experienced by the body = change in momentum
$ =\mathrm{MV}-(-\mathrm{MV}) $
$ =2 $ $\mathrm{MV}$
BETA
