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A football kicked vertically up reaches a height H and comes down to the starting point in 4 seconds. what is the value of "H"

a) 9.8 m b)2×9.8 m c)3×9.8 m d)4×9.8 m

the answer in my textbook is 2×9.8 m. I am getting the answer a) 9.8 m.

Please solve it urgently.



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Time to go up to the top point = 1/2 * 4 sec = 2 seconds
time to fall freely from top to ground = 2 sec

H = distance traveled = 1/2 g t²  = 1/2 * 9.8 * 2² = 19.6 m

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