A body is accelerated by applying a force of \( 30 \mathrm{~N} \). ...
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1A body is accelerated by applying a force of \( 30 \mathrm{~N} \). The change in the momentum of the body after \( 2 \mathrm{sec} \) is:
\( \mathrm{P} \)
(A) \( 7.5 \mathrm{~kg}-\mathrm{m} / \mathrm{s} \)
(B) \( 30 \mathrm{~kg}-\mathrm{m} / \mathrm{s} \)
(C) \( 120 \mathrm{~kg}-\mathrm{m} / \mathrm{s} \)
(D) \( 60 \mathrm{~kg}-\mathrm{m} / \mathrm{s} \)
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