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)
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)
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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)
Transcribed Image Text: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
Metal on metal (lubricated)
Ice on ice
Synovial joints in humans
Very rough surfaces
0.10
0.04
0.15
0.06
0.1
0.03
0.01
0.003
1.5
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