A small ball falling vertically downward with constant velocity $4 m / s$ strikes elastically a massive inclined cart moving with velocity $4 m / s$ horizontally as shown. the velocity of the rebounded of the ball is

4 \sqrt{2} m / s

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4 \sqrt{3} m / s

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4 m / s

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4 \sqrt{5} m / s

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Solution

The correct option is D $4 \sqrt{5} m / s$

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A small ball falling vertically downward with constant velocity 4 m/s strikes elastically a massive inclined cart moving with velocity 4 m/s horizontally as shown. the velocity of the rebounded of the ball is

The correct option is D 4√5 m/s

A small ball falling vertically downward with constant velocity $4 m / s$ strikes elastically a massive inclined cart moving with velocity $4 m / s$ horizontally as shown. the velocity of the rebounded of the ball is

The correct option is D $4 \sqrt{5} m / s$