Solve the Problem $h = 176 - 16 t ^ { 2 }$

question 121

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 176 feet high. As it is falling, its height is given by the formula $h = 176 - 16 t ^ { 2 }$ . How many seconds (in tenths) will it take for the rock to hit the ground $( h = 0 )$ ?

• A) \(12.6 \mathrm { sec }\)
• B) \(13.3 \mathrm { sec }\)
• C) \(3.3 \mathrm { sec }\)
• D) \(1936 \mathrm { sec }\)

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