Homework Help: physics

Posted by kevin on Tuesday, September 4, 2012 at 2:29pm.

In the problem, please assume the free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the problem statement. Ignore air resistance.

A stone is thrown vertically downward from the roof of a building. It passes a window 15.0 m below the roof with a speed of 24.3 m/s. It lands on the ground 4.75 s after it was thrown.

physics - Steve, Tuesday, September 4, 2012 at 3:03pm
is there a question in there somewhere?
physics - kevin, Tuesday, September 4, 2012 at 3:06pm
(a) What was the initial velocity of the stone?

(b) How tall is the building?

sorry I added the question to another post, but here it is. Thanks :)

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