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OpenStudy (anonymous):
MEDAL GIVEN TO CORRECT ANSWER. If a racehorse starts from rest and accelerates at a rate of 4.7 m/s2, how long does it take the horse to go 20 m? A. 4.3 s B. 2.9 s C. 8.5 s D. 9.1 s
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OpenStudy (anonymous):
s = distance = (1/2) (acceleration) (time)^2 time = sqrt [2 (distance)/(acceleration)] t = 2.9 s
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