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A line of charge is placed along the negative x axis from x=-0.4m to
x=0. The charge is uniformly distributed with linear charge density
3.06pC/m. A proton is released from rest at a point on the positive
x axis 2.53m. When the proton has a speed of 472.1m/s, how far will
it have moved (in m}?
1.0975 margin of error +/-1%

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