When a ball hits a wall with a velocity of 50m/s and bounces back… - Vidyadip

Question

When a ball hits a wall with a velocity of 50m/s and bounces back with the same speed, what is the change in velocity of the ball?

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Answer

$\Delta \text{p}=-2\text{mv}=-100\text{m}$ $\therefore\text{m}\Delta\text{v}'=-100\text{m}$ $\Rightarrow \text{v}'=-100\text{m/s}$

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