Question

An iceboat is at rest on a frictionless frozen lake when a sudden
wind exerts a constant force of 200 N, toward the east, on the boat.
Due to the angle of the sail, the wind causes the boat to slide in a
straight line for a distance of 8.0 m in a direction 20° north of east.
What is the kinetic energy of the iceboat at the end of that 8.0 m?

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