A body is accelerated by applying a force of 30,N . change in momentum of the body after 2,sec

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4-1.Newton's Laws of Motion

easy

A body is accelerated by applying a force of $30\,N$. The change in the momentum of the body after $2\,sec$ is ............ $kg-m/s$

A

$7.5$

B

$30 $

C

$120$

D

$60 $

Solution

$\Delta \mathrm{P}=\mathrm{F} \Delta \mathrm{t}=30 \times 2=60 \mathrm{\,kg} \mathrm{m} / \mathrm{s}$

Hence

Standard 11

Physics

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