Laws of Motion - Result Question 4
4. 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) $1.5 MV$
(c) $2 MV$
(d) zero
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Answer:
Correct Answer: 4. (c)
Solution:
- (c) Impulse experienced by the body
$=$ change in momentum
$=MV-(-MV)$
$=2 MV$
