A Rock Falls from a Tower That Is $117.6 \mathrm {~m}$

question 337

Multiple Choice

A rock falls from a tower that is $117.6 \mathrm {~m}$ high. As it is falling, its height is given by the formula $h = 117.6 = 4.9 \mathrm { t } 2$ , with $t$ in seconds. How many seconds will it take for the rock to hit the ground $( h = 0 )$ ?

• A) 10.8 sec
• B) 2822.4 sec
• C) 10.6 sec
• D) 4.9 sec

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