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Matt1234
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Homework Statement
two electrons separated by a large distance are fired directly at each other. The closest approach in this head on collision is 4e-14 m. One electron starts with twice the speed of the other. Assuming there is no deflection from the original path, determine the initial speed of the electron.
Homework Equations
Ee = (k q1 q2) / r
ek = 0.5 m v^2
The Attempt at a Solution
see here:
http://img32.imageshack.us/i/attempt9.jpg/
Answer from book is:
5.3e7 m/s