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Second Law of Motion

When the spee...

Question

When the speed of a moving body is doubled:-

A

Its acceleration is doubled

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B

Its momentum is doubled

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C

Its kinetic energy is doubled

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D

Its potential energy is doubled

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Solution

The correct option is D Its momentum is doubled
Its momentum gets doubled.
momentum is mass times speed
$p = m v$
Therefore when speed is doubled, momentum $‘ p^{'}$ gets doubled.
$p^{'} = 2 p$

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