Posted by **Mo** on Thursday, October 1, 2009 at 5:18pm.

A ball is thrown horizontally from the roof of a building 58.5 m tall and lands 38.7 m from the base. What was the ball's initial speed in m/s?

Hint: Find the horizontal velocity by calculating the time of flight and using the horizontal distance.

- Physics(urgent) -
**bobpursley**, Thursday, October 1, 2009 at 5:21pm
how long was it in the aIr?

h(f)=h(o)+vv*time - 4.9 t^2

-58.8=0+0-4.9t^2

solve for t.

now in the horizontal, you have the time, the distance, solve for the initial velocity

d=v*t

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