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OpenStudy (anonymous):
A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, how long until the ball hits the ground? Use the formula h=-16t squared+60t+5, where h is the height of the ball in feet and t is the time in seconds since it is thrown. Round your answer to the nearest tenth. A. 2.1 seconds B. 3.8 seconds C. 2.4 seconds D. 1.8 seconds
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