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.
Answers
Answered by
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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
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
Answered by
1
Answer:
the correct option is B it's 19.6m
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