physical science

if a block of wood drooped from a tall building has attained a velocity of 78.4 m/s, how long has it been falling?

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  1. Assuming no air resistance, falling objects accelerate at the rate of 9.8 m/s/s.

    If the object has attained a velocity of 78.4 m/s, it would have fallen 78.4/9.8 = 8 seconds.

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