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Hailstones falling vertically with a spe...

Hailstones falling vertically with a speed of `10 m s^-1`, hit the wind screen (wind screen makes an angle `30^@` with the horizontal) of a moving car and rebound elastically. Find the velocity of the car if the driver finds the hailstones rebound vertically after striking.
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Text Solution

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The correct Answer is:
`10 sqrt(3) m//s`
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