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JEE MAIN 2019
11-01-2019 S2
Question
A particle of mass $m$ is moving in a straight line with momentum $p$. Starting at time $t=0$, a force $F=k t$ acts in the same direction on the moving particle during time interval $T$ so that its momentum changes from $p$ to $3 p$. Here $k$ is a constant. The value of $T$ is
Select the correct option:
A
$\sqrt{\frac{2 k}{p}}$
B
$2 \sqrt{\frac{p}{k}}$
C
$\sqrt{\frac{2 p}{k}}$
D
$2 \sqrt{\frac{\mathrm{k}}{\mathrm{p}}}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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