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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