Solve the Problem. -A Rock Falls from a Tower That Is 416 Ft

question 121

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 416 ft high. As it is falling, its height is given by the formula h = 416 - 16t2. How many seconds will it take for the rock to hit the ground (h=0) ?

• A) 5.1 s
• B) 10,816 s
• C) 20.4 s
• D) 20 s

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