Solve.
-A window washer accidentally drops a bucket from the top of a 400-foot building. The height h of the bucket after t seconds is given byn by $h = - 16 t ^ { 2 } + 400$ When will the buck When will the bucket hit the ground?
A)80 sec
B)25 sec
C)5 sec
D)-5 sec

Question

Quizplus · Accepted Answer

The bucket hits the ground when $h = 0$. Setting the equation to 0 gives $0 = -16t^2 + 400$. Solving for $t$ gives $t = 5$ seconds.

Solve -A Window Washer Accidentally Drops a Bucket from the Top

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-A Window Washer Accidentally Drops a Bucket from the Top