Mathematics, 29.06.2021 01:00 davi113001
A ball is thrown from an initial height of 3 feet with an initial upward velocity of 21 ft/s. The ball height h (in feet) after t seconds is given by the following. h=3+21t-16t^2 find all values of t for which the balls height is 9 feet.
Answers: 3
and we are looking for the times when the position of the ball is 9 feet. That means that we simply plug in a 9 for s(t) and factor to solve for t:
and
and this is what we factor to find t:
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A ball is thrown from an initial height of 3 feet with an initial upward velocity of 21 ft/s. The ba...
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