An electron moves in the positive x-direction a distance of 2.42 m in 2.91 ∙ 10–8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.69 m in 3.43-10–8 s.
a) What is the average velocity of the electron over the entire time interval?
b) What is the average speed of the electron over the entire time interval?
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