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Homework Statement
Homework Equations
The Attempt at a Solution
The answer to this problem can be obtained by equating ##\frac{1}{2}mv^2 = ΔU## .
But I am not sure why this is to be done . In fact I think this is not quite right .
1) The Kinetic energy ##\frac{1}{2}mv^2## is the energy due to bulk motion whereas ΔU relates the microscopic motion .Can we really equate the two ?
2) Is this an application of 1st law of thermodynamics . I do not think so .
3) Is this a simple energy conservation problem . Again I doubt that is the case .
Any help is appreciated .
Thanks
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