A ball is upward with such a velocity `v` that it returns to the thrower after after `3 s`. Take `g = 10 ms^-2`. Find the value of `v`.A. 15 m//sB. 20 m//sC. 10 m//sD. 5 m//s

A ball is upward with such a velocity `v` that it returns to the throw

1.	A ball is upward with such a velocity `v` that it returns to the thrower after after `3 s`. Take `g = 10 ms^-2`. Find the value of `v`.A. 15 m//sB. 20 m//sC. 10 m//sD. 5 m//s
Answer» Correct Answer - A Using `vec h = vec u t + (1)/(2) vec a t^2`, Since the displacement is zero, `0 = uT - (1)/(2) g t^2 rArr u = (gT)/(2)` `rArr u = (10 xx 3)/(2) = 15 m//s`.

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A ball is upward with such a velocity `v` that it returns to the thrower after after `3 s`. Take `g = 10 ms^-2`. Find the value of `v`.A. 15 m//sB. 20 m//sC. 10 m//sD. 5 m//s

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