# A bullet is fired upward from ground level. Its height above the ground (in feet) at time t seconds is given by #H = -16t^2 + 1000t#. How many seconds does it take the bullet to return to ground level?

##### 1 Answer

Apr 20, 2018

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#### Explanation:

You are looking for the moment when H will be 0 again. That is

this product will be zero if