9. A sailor pulls a boat along a dock using a rope at an angle of 60.0° with the
horizontal. How much work does the sailor do if he exerts a force of 255 N
on the rope and pulls the boat 3.00 m? A girl pulls a wagon along a level path
for a distance of 44 m. The handle of the wagon makes an angle of 22°
above horizontal. If she pulls on the handle with a force of 87 N, how much
work is done?
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