Physics
Grade-9
Easy
Question
Friction is a ____.
- Non-contact force
- Contact force
- Magnetic force
- Electrostatic force
Hint:
Whenever surfaces in touch move in relation to one another, the force preventing two surfaces from sliding past one another is called friction.
The correct answer is: Contact force
Friction is a contact force.
- The friction force is created when two surfaces are in touch and move along.
- This is also called contact force as it is created when the two surfaces get in contact with each other.
- For example: walking on a road. Friction is created when there is contact between the road and the foot.
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