An object is thrown straight down from the top of a
An object is thrown straight down from the top of a building at a speed of 20 m/s. It hits the ground with a speed of 40 m/s.
a) How high is the building?
b) How long was the object in the air?
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an object is thrown straight down from the top of a building at a speed of 20 ms it hits the ground with a speed of 40
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