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Q. In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. Calculate the average velocity between t=0 and t=7.5 minutes.

Q. Two point charges, separated by 1.5 cm, have charge values of +2.0 and -4.0 μC, respectively. What is the value of the mutual force between them? (ke = 8.99 x 109 N m2/C2)

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