Solve the Problem $t$ In Seconds Is $s ( t ) = 16 t ^ { 2 } + 32 t$

question 86

Multiple Choice

Solve the problem.
-A ball is thrown downward from a window in a tall building. Its position at time $t$ in seconds is $s ( t ) = 16 t ^ { 2 } + 32 t$ , where $s ( t )$ is in feet. How long (to the nearest tenth) will it take the ball to fall 77 feet?

• A) \(1.2 \mathrm { sec }\)
• B) \(2.0 \mathrm { sec }\)
• C) \(2.2 \mathrm { sec }\)
• D) \(1.4 \mathrm { sec }\)

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