A ball is thrown vertically downward wit...

A ball is thrown vertically downward with velocity of 20 m/s from top of tower. It hits ground after some time with a velocity of 80 m /s . Height of tower is

360 m

340 m

320 m

300 m

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A ball is thrown vertically downward with a velocity of 20m/s from the top of a tower,It hits the ground after some time with a velocity of 80m/s .The height of the tower is : (g=10m/g^(2))

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