Posted by **PhysicsGuy** on Tuesday, September 20, 2011 at 7:01pm.

At t = 0, a stone is dropped from a cliff above a lake; 1.3 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff.

No idea how to get the height. Help please!

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