An 80.0 kg skier starts at the top of a 30.0 m high hill from rest. The hill makes a 15.00 angle with respect to the horizontal. When the skier reaches the bottom of the hill at point B a friend measures the skier's speed to be 12.0 m's. The skier comes to rest at point C. 30 m 15 . How much work was done by gravity in moving from point A to point C? Answer in Joules

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please use at least 4 significant figures throughout the entire problem! Also use 9.80m/s2 for the acceleration due to gravity. DO NOT USE 10 M/S2 FOR THE ACCELERATION DUE TO GRAVITY!

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An 80.0 kg skier starts at the top of a 30.0 m high hill from rest. The hill makes a 15.00 angle
with respect to the horizontal. When the skier reaches the bottom of the hill at point B a friend
measures the skier's speed to be 12.0 m/s. The skier comes to rest at point C.
30 m
15
c. How much work was done by gravity in moving from point A to point C? Answer in Joules
Transcribed Image Text:An 80.0 kg skier starts at the top of a 30.0 m high hill from rest. The hill makes a 15.00 angle with respect to the horizontal. When the skier reaches the bottom of the hill at point B a friend measures the skier's speed to be 12.0 m/s. The skier comes to rest at point C. 30 m 15 c. How much work was done by gravity in moving from point A to point C? Answer in Joules
An 80.0 kg skier starts at the top of a 30.0 m high hill from rest. The hill makes a 15.00 angle
with respect to the horizontal. When the skier reaches the bottom of the hill at point B a friend
measures the skier's speed to be 12.0 m/s. The skier comes to rest at point C.
30 m
150
D
d. Once the skier reaches point B assume the coefficient of friction changes to 0.500 for the
portion from B to C. What distance D does the skier travel before coming to rest? Answer in
meters.
Transcribed Image Text:An 80.0 kg skier starts at the top of a 30.0 m high hill from rest. The hill makes a 15.00 angle with respect to the horizontal. When the skier reaches the bottom of the hill at point B a friend measures the skier's speed to be 12.0 m/s. The skier comes to rest at point C. 30 m 150 D d. Once the skier reaches point B assume the coefficient of friction changes to 0.500 for the portion from B to C. What distance D does the skier travel before coming to rest? Answer in meters.
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