Posted by **Sierra** on Wednesday, June 20, 2012 at 10:10pm.

Two children are playing on a 154-m-tall bridge. One child drops a rock (initial velocity zero) at

t = 0.

The other waits 1.1 s and then throws a rock downward with an initial speed

v0.

If the two rocks hit the ground at the same time, what is v0

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