An Object Is Thrown Upward from a Height of 480 $h = - 16 t ^ { 2 } + 16 t + 480$

question 72

Multiple Choice

An object is thrown upward from a height of 480 feet with an initial velocity of 16 feet per second. The height h (in feet) of the object after t seconds is modeled in the equation $h = - 16 t ^ { 2 } + 16 t + 480$ . How long will it take for the object to reach the ground?

• A)5 seconds
• B)6 seconds
• C)1 second
• D)3 seconds
• E)2 seconds

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