Luke pulls a sled using a force of 65 N for a distance of 25 m across level ground. The rope Luke pulls forms an angle of 25° with the ground.

Only the component of Luke’s force parallel to the ground does work on the sled. Use W = Fd cos θ: W = (65 N)(25 m)cos 25° ≈ 1,473 J, which rounds to 1,500 J. Therefore, the correct choice is 1,500 J.

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