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11 October, 05:00

A ball is thrown from a height of 157 feet with an initial downward velocity of 9 ft/s. The ball's height h (in feet) after t seconds is given by the following. h = 157-9t-16t^2

How long after the ball is thrown does it hit the ground?

Round your answer (s) to the nearest hundredth.

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Answers (1)
  1. 11 October, 07:11
    0
    13.5 or 13.0 seconds
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