4. A girl is sledding down a slope that is inclined at 30° with respect to the horizontal. A moderate wind is aiding the motion by providing a steady force of 105N that is parallel to the motion of the sled. The combined mass of the girl and sled is 65 kg, and the coefficient of kinetic friction between the runners of the sled and the snow is 0.150. How much time is required for the sled to travel down a 175-m slope, starting from rest? a. 9.82 sec b. 6.28 sec c. 8.28 sec d. 18.72 sec
4. A girl is sledding down a slope that is inclined at 30° with respect to the horizontal. A moderate wind is aiding the motion by providing a steady force of 105N that is parallel to the motion of the sled. The combined mass of the girl and sled is 65 kg, and the coefficient of kinetic friction between the runners of the sled and the snow is 0.150. How much time is required for the sled to travel down a 175-m slope, starting from rest? a. 9.82 sec b. 6.28 sec c. 8.28 sec d. 18.72 sec
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter4: The Laws Of Motion
Section: Chapter Questions
Problem 11WUE: A man exerts a horizontal force of 112 N on a refrigerator of mass 42.0 kg. If the refrigerator...
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