3 years ago

6) A ball free falls from the top of the roof for 5 seconds. How far did it fall? What is its final

Physics

1 answer:

gayaneshka [121]3 years ago

5 0

Answer:

distance fallen = 122.5 m

speed = 49 m/s

Explanation:

Δd = vi*t - 0.5at^2

Δd = 0 - 0.5(9.8)(5^2)

Δd = -122.5 (i.e. 122.5m down)

a = (vf - vi) / t

9.8 = (vf - 0) / 5

vf = 49

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