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Second Law of Motion

Question

The SI unit of momentum is :
$k g m s^{- 1}$
$k g m s^{- 2}$
$k g m s^{2}$
$k g m^{- 1} s^{- 1}$

A

k g m s^{- 1}

B

k g m s^{- 2}

C

k g m^{- 1} s^{- 1}

D

k g m s^{2}

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Solution

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$∵$ $p = m v$ unit of $m = k g$
unit of $v = m$ $s^{- 1}$
$∴$ unit of momentum
$P = m V$ is $k g m$ $s^{- 1}$ .
Hence option A is the correct answer.

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