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i wanna ask one problem about electrostaics.

i will be very thankful to u if u post reply about this question.

Suppose we have one moving electron ,approaching towards a fixed electron.

If they 1mm apart when the moving electron has the velocity of 1000cm/s.

How far will be the moving electron from the fixed electron when it comes to the rest.

mass of electron=9.1E-31 Kg

charge of electron =1.6E-19 C

Answer=.5 mm