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Solve the Problem s=144+128t16t2s = 144 + 128 t - 16 t ^ { 2 }

Question 107

Multiple Choice

Solve the problem.
-A ball is thrown vertically upward from the top of a building 144 feet tall with an initial velocity of 128 feet per second. The distance s (in feet) of the ball from the ground after t seconds is After how s=144+128t16t2s = 144 + 128 t - 16 t ^ { 2 } many seconds does the ball strike the ground?


A) 9 sec
B) 145 sec
C) 11 sec
D) 8 sec

Correct Answer:

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