Posted by john on Thursday, March 4, 2010 at 9:43pm.
Not a chemistry question. Someone in physics, please.
There is no question here. The statement that the KE of the ball is (1/2) M V^2 is incorrect if it is rolling, as it says it is. The KE of a rolling solid sphere is (7/10) M V^2.
I have never seen a rolling billard ball lose 22% of its speed while crossing a pool table.
Under these circumstqances, there is no properly posed question for us to answer.
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