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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
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OpenStudy (anonymous):
The ball will touch the ground again in 21/16 seconds.
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