The sled's potential energy can be calculated using the formula PE = mgh, where m is the mass of the sled, g is the gravitational force, and h is the height of the slope. In this case, the mass is 45 kg, the gravitational force is 9.81 m/s2, and the height of the slope is 2 m. Therefore, the potential energy of the sled is 882.9 Joules (PE = 45 x 9.81 x 2 = 882.9 J).
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