Solve the Problem $s = 576 - 16 \mathrm { t } ^ { 2 }$

question 60

Multiple Choice

Solve the problem.
-A ball dropped from the top of a building has a height of $s = 576 - 16 \mathrm { t } ^ { 2 }$ meters after $\mathrm { t }$ seconds. How long does it take the ball to reach the ground? What is the ball's velocity at the moment of impact?

• A) \(36 \mathrm { sec } , - 1152 \mathrm {~m} / \mathrm { sec }\)
• B) \(6 \mathrm { sec } , 192 \mathrm {~m} / \mathrm { sec }\)
• C) \(12 \mathrm { sec } , - 96 \mathrm {~m} / \mathrm { sec }\)
• D) \(6 \mathrm { sec } , - 192 \mathrm {~m} / \mathrm { sec }\)