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A person on a sled slides down a hill and then goes over another hill with speed 2.70 m/s. The top of the second hill can be modeled as a circle of radius 4.10 m. The sled and the person have a combined mass of 110 kg. If the coefficient of kinetic friction between the sled and the ground is 0.100, what friction force is exerted on the sled by the ground as the sled goes over the top of the second hill?