An Object Has Been Thrown Straight Up into the Air $h = v t - 16 t ^ { 2 }$

question 27

Multiple Choice

An object has been thrown straight up into the air. The formula $h = v t - 16 t ^ { 2 }$ gives the height h of the object above the ground after t seconds, when it is thrown upward with an initial velocity v . After how many seconds will an object hit the ground if it is thrown with a velocity of 112 feet per second?

• A) \(t = 18\) sec
• B) \(t = 23\) sec
• C) \(t = 6\) sec
• D) \(t = 20\) sec
• E) \(t = 7\) sec

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