Solve the Problem $$\mathrm { s } = 144 + 128 \mathrm { t } - 16 \mathrm { t } ^ { 2 }$$

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 $$\mathrm { s } = 144 + 128 \mathrm { t } - 16 \mathrm { t } ^ { 2 }$$ . After how
Many seconds does the ball strike the ground?

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