Posted by srikala on Thursday, April 12, 2012 at 12:26pm.
Before: m(v1)^2/2
After:
since v2= v1/2,
m(v2)^2/2 = m(v1)^2/2•4
ΔE = E1- E2 = m(v1)^2/2 - m(v1)^/2•4 =
= (3/4) •m(v1)^2/2
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