2. Given the following: Q1 = -2 nC located @ (5m,0) Q2 = +4 nC located @ (0, 8m) Q3 = +6 nC located @ (0, 4m) What is the net force by Q1 and Q2 on Q3?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!