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March 25, 2017

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A net force of 1.6×10−15 N acts on an electron over a displacement of 5.0 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron in joules? (b) If the electron was initially at rest, what is the speed of the electron in m/s? An electron has a mass of 9.1×10−31 kg.

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