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A particle moves from ^r_i = (1 m)ˆi + (5 m)ˆj to a position ^r_f= −(2 m)ˆi − (8 m)ˆj due to a force ^F = (6x N)ˆi + (4 N)ˆj where x is in meters. Compute the work done by this force.

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