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if a ball is projected vertically up with velocity of 25 m/s ? find maximum height rached by body and time to reach maximum haight?

Asked by rakeshauto.73 22nd December 2015, 7:06 PM

Answered by Expert

Answer:

begin mathsize 12px style Given colon straight u space equals space 25 space straight m divided by straight s maximum space height comma space straight h space equals space ? time space to space reach space maximum space height comma space straight t space equals space ? Using space kinematic space equation space of space motion straight v squared thin space equals space straight u squared space minus space 2 gh At space maximum space height comma space straight v space equals space 0 straight u squared space equals space 2 gh straight h space equals space fraction numerator straight u squared space over denominator 2 straight g end fraction space equals space fraction numerator space 25 squared over denominator 2 cross times 9.8 end fraction space equals space 31.89 space straight m Time space to space reach space at space maximum space height comma straight v space equals space straight u space minus space gt 25 space equals space 9.8 straight t straight t space equals space fraction numerator 25 over denominator 9.8 end fraction space equals space 2.55 space straight s end style

Answered by Expert 23rd December 2015, 10:27 AM

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