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A ball is thrown from an initial height of 2 meters with an initial upward velocity of 15 m/s. The ball's height h (in meters) after t
seconds is given by the following.
h=2+15t-5t^2

Find all values of t for which the ball's height is 7 meters
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)

Sagot :

Answers T = 0.69s or T = 2.31s
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