Joanna and her brother are skiing together while Joanna is holding the end of a rope tied to her brother. They are both moving at a velocity of 7.20kph on a sloping portion of the ski slope. Joanna notices that they are approaching a steep ski slope. She then pulls the rope with an average force of 7 Newtons. If the angle of the rope will not change and the coefficient of kinetic friction between her brother and the ground is 0.10, determine (a) the time required for her brother’s speed to be cut in half, and (b) the distance traveled in this time.
Joanna and her brother are skiing together while Joanna is holding the end of a rope tied to her brother. They are both moving at a velocity of 7.20kph on a sloping portion of the ski slope. Joanna notices that they are approaching a steep ski slope. She then pulls the rope with an average force of 7 Newtons. If the angle of the rope will not change and the coefficient of kinetic friction between her brother and the ground is 0.10, determine (a) the time required for her brother’s speed to be cut in half, and (b) the distance traveled in this time.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Joanna and her brother are skiing together while Joanna is holding the end of a rope tied to her brother. They are both moving at a velocity of 7.20kph on a sloping portion of the ski slope. Joanna notices that they are approaching a steep ski slope. She then pulls the rope with an average force of 7 Newtons. If the angle of the rope will not change and the coefficient of kinetic friction between her brother and the ground is 0.10, determine (a) the time required for her brother’s speed to be cut in half, and (b) the distance traveled in this time.
Transcribed Image Text:20 kg
| 20°
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