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A ball rolls off a 45 m high shelf at 15 m/s. With g = 10 m/s2, it lands at what horizontal distance from the edge?
A30 m
B45 m
C60 m
D15 m
Answer & Solution
Correct answer: B. 45 m
Fall time is 3 s from 45 = 5t squared, so the horizontal distance is 15 x 3 = 45 m.
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