Solve.
-A window washer accidentally drops a bucket from the top of a 64-foot building. The height h of the bucket after t seconds is given byn by $h = - 16 t ^ { 2 } + 64$ . When will the bucket hit the ground?
A)2 sec
B)4 sec
C)-2 sec
D)32 sec

Question

Quizplus · Accepted Answer

The bucket hits the ground when $h = 0$. Solving $0 = -16t^2 + 64$ for $t$, we get $t = 2$ 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