A small mass slides without friction across a plane an (x,y) coordinate system directly from the origin to a point with (x,y) coordinates (1.3 m, 9.6 m); a constant force acts on it. The force has magnitude 2.1 N and its direction is at a counterclockwise angle of 128o from the positive x axis. How much work is done by the force on the mass during the displacement?

Question

Do I use F*d*cos(theta) or just F*d?

Answer 1

F*d

Answer 2

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