An iceboat is at rest on a frictionless frozen lake when a sudden wind exerts a constant force of 140 Newton, 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 6.6 meter in a direction 26 degree north of east. Find the kinetic energy of the iceboat at the end of that 6.6 meter?