Posted by Kyle on Wednesday, March 3, 2010 at 12:59am.
When the depth of the rock below the surface is 0 m, it has not moved since it was released at the surface. No work has been done and there is zero kintic energy.
Are you sure you copied the last line coreectly?
There are 3 portions. The next one is at 0.50 m and the last one is when the rock is at 1.0 m.
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