Learning Path
Question & Answer
Choose the Best Answer
The roughness of the plank's surface
The color of the car
The size of the car's wheels
The weight of the car's passengers
Understanding the Answer
Let's break down why this is correct
The surface roughness determines how much friction force pushes against the car. Other options are incorrect because Many think color changes friction, but light or dark paint has no effect on the force between surfaces; Wheel size does affect rolling resistance, but on a rough plank the main battle is between the car and the floor, not wheel size.
Key Concepts
Friction Coefficient Variations
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Deep Dive: Friction Coefficient Variations
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Definition
Friction coefficient variations due to factors like surface roughness, surface area, and object mass affect sliding behavior on inclines. Understanding these variations helps analyze frictional forces' complexities and their impact on object motion.
Topic Definition
Friction coefficient variations due to factors like surface roughness, surface area, and object mass affect sliding behavior on inclines. Understanding these variations helps analyze frictional forces' complexities and their impact on object motion.
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