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  • A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than previous height

A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than previous height, the momentum when it hits the ground will change by:

Option: 1

41%


Option: 2

200%


Option: 3

100%


Option: 4

68%


Answers (1)

best_answer

V=\sqrt{2gh}

P=mv

P\alpha \sqrt{h}

\frac{P_{2}}{P_{1}}=\sqrt{\frac{h_{2}}{h_{1}}}=\sqrt{\frac{2h}{h}}=\sqrt{2}

P_{2}=1.414P_{1}

\% change =\left ( \frac{P_{2}-P_{1}}{p_{1}} \right )\times 100=41\%

Posted by

Rishabh

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