FrictionSaved to this PCDesignLayoutReferencesMailingsReviewView6SearchHelp11A A Aa- AoAaBbCcDc AaBbCcDc AaBt AaBbC Ab x, x A 0.A-目三三三,-田。1 Normal1No Spac. 1Heading 1 THeading 2FontParagraphStyleswould you have to apply to get the car to start sliding? If you continued to apply this sameforce, determine the acceleration of the car. If you pushed for 20 s, how far would the cartravel? (use dry concrete)MaterialsSteel on steel0.740.57Aluminum on steel0.610.47Copper on steelRubber on concrete (dry)Rubber on concrete (wet)0.530.361.00.80.30.25Wood on wood0.25-0.50.2Glass on glass0.940.4Teflon on Teflon0.040.04Teflon on steel0.040.04Waxed wood on wet snoW0.140.1Waxed wood on dry snoW0.100.04Metal on metal (lubricated)Ice on ice0.150.060.10.03Synovial joints in humansVery rough surfaces0.010.0031.5DELL FrictionSaved to this PCLayoutReferencesMailingsReviewViewHelp9 Search* A A Aa- A 三,三、市,国刷头TAaBbCcDc AaBbCcDc AaBl AaBbC Ax A-.A-四州加這,么、田,1 Normal1 No Spac. 1Heading 1 1 Heading 2ntParagraphStylesCoefficient of Kinetic FrictionName:1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If thecoefficient of static friction between the grass and sled is 0.9, determine if the sled moves ornot. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kineticfriction = 0.6)2.) A physics student (90 kg) on skis is pulled horizontally across the dry snow with a rope. If thereis friction according to the value below (waxed wood on dry snow), determine the forcenecessary to accelerate the student at 2 m/s².3.) The driver of a car (1100 kg) traveling at 30 m/s on dry concrete sees a deer in the distance andslams on the brakes and skids to a stop. How far does the car travel before stopping?4.) You find an abandoned car in a Walmart parking lot. The car is locked. You look up the car onKelly's Blue Book and find the mass to be 1200 kg. You go and push the car. How much forcewould you have to apply to get the car to start sliding? If you continued to apply this sameforce, determine the acceleration of the car. If you pushed for 20 s, how far would the cartravel? (use dry concrete)MaterialsDELL

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1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If the coefficient of static friction between the grass and sled is 0.9, determine if the sled moves or not. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kinetic friction = 0.6) %3D

1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If the coefficient of static friction between the grass and sled is 0.9, determine if the sled moves or not. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kinetic friction = 0.6) %3D

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Publisher:Raymond A. Serway, Chris Vuille

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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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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Friction
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11
A A Aa- Ao
AaBbCcDc AaBbCcDc AaBt AaBbC A
b x, x A 0.A-
目三三三,-
田。
1 Normal
1No Spac. 1Heading 1 THeading 2
Font
Paragraph
Styles
would you have to apply to get the car to start sliding? If you continued to apply this same
force, determine the acceleration of the car. If you pushed for 20 s, how far would the car
travel? (use dry concrete)
Materials
Steel on steel
0.74
0.57
Aluminum on steel
0.61
0.47
Copper on steel
Rubber on concrete (dry)
Rubber on concrete (wet)
0.53
0.36
1.0
0.8
0.3
0.25
Wood on wood
0.25-0.5
0.2
Glass on glass
0.94
0.4
Teflon on Teflon
0.04
0.04
Teflon on steel
0.04
0.04
Waxed wood on wet snoW
0.14
0.1
Waxed wood on dry snoW
0.10
0.04
Metal on metal (lubricated)
Ice on ice
0.15
0.06
0.1
0.03
Synovial joints in humans
Very rough surfaces
0.01
0.003
1.5
DELL

Friction
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Layout
References
Mailings
Review
View
Help
9 Search
* A A Aa- A 三,三、市,国刷头T
AaBbCcDc AaBbCcDc AaBl AaBbC A
x A-.A-
四州加這,么、田,
1 Normal
1 No Spac. 1Heading 1 1 Heading 2
nt
Paragraph
Styles
Coefficient of Kinetic Friction
Name:
1.) A football sled of mass 300 kg is pushed by football players with a force of 2800 N. If the
coefficient of static friction between the grass and sled is 0.9, determine if the sled moves or
not. Explain. If the sled moves determine the acceleration of the sled. (coefficient of kinetic
friction = 0.6)
2.) A physics student (90 kg) on skis is pulled horizontally across the dry snow with a rope. If there
is friction according to the value below (waxed wood on dry snow), determine the force
necessary to accelerate the student at 2 m/s².
3.) The driver of a car (1100 kg) traveling at 30 m/s on dry concrete sees a deer in the distance and
slams on the brakes and skids to a stop. How far does the car travel before stopping?
4.) You find an abandoned car in a Walmart parking lot. The car is locked. You look up the car on
Kelly's Blue Book and find the mass to be 1200 kg. You go and push the car. How much force
would you have to apply to get the car to start sliding? If you continued to apply this same
force, determine the acceleration of the car. If you pushed for 20 s, how far would the car
travel? (use dry concrete)
Materials
DELL

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QUESTION 2 A 20-kg crate is initially at rest on a level floor. A maintenance worker attaches a light, uniform rope to the crate and pulls on the rope so that the tension is 120 N and is parallel to the ground. As a result, the crate accelerates at a constant rate of 1.5 m/s-. What is the coefficient of static friction between the crate and the floor? а. 0.80 b. 0.92 С. О.34 d. 0.68 е. 0.46
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