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Physics of Friction Quiz

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Questions and Answers

What is the primary effect of sliding friction between a body and the surface?

It prevents the body from moving.
It creates a magnetic force that increases movement.
It generates heat and sound. (correct)
It enables the body to slide freely without resistance.

What is the purpose of threading on tyres?

To allow for better fuel efficiency.
To enhance aesthetics and design.
To reduce the weight of the tyre.
To increase friction and improve road grip. (correct)

Which of the following is a disadvantage of friction?

It can increase the lifespan of moving parts.
It limits the speed of moving objects. (correct)
It allows vehicles to stop safely.
It enables writing and drawing on paper.

How does friction facilitate writing with a pencil?

<p>By providing traction that allows the pencil to mark the paper. (B)</p> Signup and view all the answers

Why is friction important for the flight of birds?

<p>It prevents their wings from slipping against the air. (C)</p> Signup and view all the answers

Flashcards

Friction

The force that opposes motion between two surfaces in contact.

Sliding friction

The friction between two surfaces that are sliding past each other.

Tire threading

The grooves or patterns on a tire that increase friction between the tire and the road surface.

Disadvantages of friction

The loss of energy due to friction, which is converted into heat and sound.

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Advantages of friction

The ability to walk, write, and stop moving objects due to the force of friction.