Falling objects drop with an average acceleration of 9.8 m/s2. If an object falls from a tall building, how long will it take before it reaches a velocity of 49 m/s, downward?
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Answer:
5 s
Explanation:
v = at (velocity = acceleration * time)
49 m/sec = 9.8 m/sec/sec * t
t = 49/9.8 = 5 seconds
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