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Conservation of Momentum

Two bullets P...

Question

Two bullets P and Q of masses 10 and 20 g, are moving in the same direction towards a target with velocities of 200 $m / s$ and 100 $m / s$ respectively. Which one of the bullets will pierce a greater distance through the target?

A

P

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B

Q

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C

both will cover the same distance

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D

nothing can be decided

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Solution

The correct option is A P
$K E = \frac{m v^{2}}{2}$
As, P has greater kinetic energy, it will pierce a greater distance.

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