Question

A girl is sledding down a slope that is inclined at 28.0 with respect to the horizontal. The wind is aiding the motion by providing a steady force of 110 N that is parallel to the motion of the sled. The combined mass of the girl and the sled is 61.7 kg, and the coefficient of kinetic friction between the snow and the runners of the sled is 0.195. How much time is required for the sled to travel down a 180-m slope, starting from rest?

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=61、7 ime () -) The net tice excated on the JM/ 疣Hence, 가e acceluctin 91h. girl 61、구 2828D -l04 101 61、7 az 4,6% m/Y Hunce, Heuel time I8 au - 75S6 4- 696 8-76 sec

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