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

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Description: 4. A girl is sledding down a slope that is inclined at 30° with respect to the horizontal. A moderate windis aiding the motion by providing a steady force of 105N that is parallel to the motion of the sled. Thecombined mass of the girl and sled is 6

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 2STP

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