Homework Help: physics

Posted by Natasha on Sunday, February 12, 2012 at 12:32am.

An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of 0.034 m. The electron's acceleration is due to two electric forces parallel to the x axis: 1 = +7.03 10-17 N, and 2, which points in the -x direction. Find the magnitudes of the net force acting on the electron and the electric force 2.

physics - drwls, Sunday, February 12, 2012 at 8:54am
KE change = 2 a X
X = 0.034 m
Solve for a

Fnet = m*a

Fnet = F1 - F2

You know F1; solve for F2

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