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John Throws a Rock Down with Speed 15 M/s from the Top

Question 61

Multiple Choice

John throws a rock down with speed 15 m/s from the top of a 27-m tower.If g = 9.8 m/s2 and air resistance is negligible,what is the rock's speed just as it hits the ground?


A) 22 m/s
B) 27 m/s
C) 754 m/s
D) 23 m/s
E) ​16 m/s

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