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Question:

A ball is kicked off the edge of a roof that is 34 meters tall. The horizontal speed given to the ball is 12.5 m/s. If there is no air resistance, how far out from the base of the building will the ball land?

A 32.86 m.
explanation

This problem provides the vertical distance (height of the roof of the building), vertical acceleration (gravitational constant), and the initial horizontal velocity (speed of the ball).
Vx = Horizontal velocity (12.5 m/s)
dy= vertical displacement of the object (34 m)
dx = unknown (this is what we are solving for)
t = time = sqrt(2 × height / 9.81)
\(a=9.8 m/s^2\)
Since we assume there is no air resistance, dx = Vx t.
dx = vxt
\(dx= 12.5m/s \times 2.63s\)
dx = 32.86 m
Since there is no air resistance, the ball will land 32.86 m from the building.

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