Practice Factors Affecting Friction (9.2) - FRICTION

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6 sample questions

Question 1.
What does friction oppose?
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Think about sliding surfaces.
Question 2.
Name one factor that affects friction.
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Consider, does roughness matter?
3Question 3.
What is friction?
- A force that aids motion
- A force that opposes motion
- A force that has no effect
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Remember its role in daily activities.
4Question 4.
True or false: Friction is always beneficial.
- True
- False
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Consider situations when it causes problems.
Question 5.
A wooden box requires a force of 50 N to start moving on a concrete surface. If the box is placed on a smooth plastic sheet, how much would you expect that force to change?
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Consider which surface is smoother.
Question 6.
You have two paths: one is a rough terrain and the other is smooth asphalt. Calculate the energy lost due to friction if you applied the same force of 100 N on both paths with respective coefficients of 0.5 and 0.1 for friction.
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Use the formula: Work Done = Force × Distance × Friction Coefficient.

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