Question: A block, on a frictionless surface, is pulled horizontally by two opposing forces, F1 = 3 N to the left and F2 = 5 N

A block, on a frictionless surface, is pulled horizontally by two opposing forces, F1 = 3 N to the left and F2 = 5 N to the right. What are the magnitude and direction of a third force F3, such that the block will move with a continuous velocity of v = 3 m/s to the left?

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