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Solve the Problem h=464−16t2h = 464 - 16 t ^ { 2 }

Question 494

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 464 feet high. As it is falling, its height is given by the formula h=464−16t2h = 464 - 16 t ^ { 2 } How many seconds (in tenths) will it take for the rock to hit the ground (h = 0) ?


A) 5.4 sec
B) 21.2 sec
C) 13,456 sec
D) 21.5 sec

Correct Answer:

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