A body of mass $5 k g$ undergoes a change in speed from $20$ to $0.20 m / s$ . The momentum of the body would

Increase by

99 k g m / s

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Decrease by

99 k g m / s

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Increase by

101 k g m / s

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Decrease by

101 k g m / s

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Solution

The correct option is B Decrease by $99 k g m / s$
$m o m e n t u m = m a s s * δ v = 5 k g * (20 - 0.20) = 99 k g m / s$
Hence it decreases by $99 k g m / s$

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