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Mathematics 16 Online
OpenStudy (anonymous):

Arianna kicks a soccer ball off the ground and into the air with an initial velocity of 42 feet per second. Assume the starting height of the ball is 0 feet. Approximately, how long does it take until the soccer ball hits the ground again? Using H(t)=-16t^2+vt+s

OpenStudy (anonymous):

The ball will touch the ground again in 21/16 seconds.

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