If a ball is thrown upwards with a velocity of 20 m/s.find the time for which the ball will remain in air.
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answer of this question is 4
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put v=gt
=> 20= 10t
t=2 for upward flight and same for downward flight so total =4sec
=> 20= 10t
t=2 for upward flight and same for downward flight so total =4sec
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