physics please help
posted by Georgy .
A student throws a baseball from the ground to the top of the flag pole. If returns to the ground in 4.00s what it the height of the flagpole?
Please show all work need help have a test comine up

Tr = Tf = 4s./2 = 2 s. = Rise & fall time.
h = Vo*Tf + 0.5g*Tf^2 = 0 + 49*2^2 = 19.6 m.
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