A Rock Falls from a Tower That Is 208 Feet $h = 208 - 16 t { } ^ { 2 }$

question 191

Multiple Choice

A rock falls from a tower that is 208 feet high. As it is falling, its height is given by the formula $h = 208 - 16 t { } ^ { 2 }$ . How many seconds (in tenths) will it take for the rock to hit the ground $( h = 0 )$ ?

• A) 3.6 sec
• B) 13.9 sec
• C) 14.4 sec
• D) 2704 sec

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