Mathematics
Mathematics, 29.03.2020 13:06, kingken3400

A water rocket is projected vertically upward from the ground. Its a height(h) m above the ground after t seconds is given by h=20-5(t-2)^2. When will the rocket reach the ground?
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A water rocket is projected vertically upward from the ground. Its a height(h) m above the ground af...

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