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Questions and Answers
Which force arises when two surfaces come into contact and oppose each other's relative motion?
Which force arises when two surfaces come into contact and oppose each other's relative motion?
- Tension
- Gravity
- Friction (correct)
- Magnetism
What role does friction play when an object is at rest?
What role does friction play when an object is at rest?
- It has no effect
- It increases speed
- It facilitates movement
- It prevents movement (correct)
What factor affects the level of friction between surfaces?
What factor affects the level of friction between surfaces?
- Color
- Nature and smoothness (correct)
- Weight
- Temperature
What can excessive friction in machines lead to?
What can excessive friction in machines lead to?
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What is used to reduce friction between moving parts?
What is used to reduce friction between moving parts?
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