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Friction and Forces Quiz

Authored by Hamizah ms

Other

1st Grade

Friction and Forces Quiz
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference between static and kinetic friction?

Static friction acts when surfaces are moving, while kinetic friction acts when surfaces are stationary.

Static friction is greater than kinetic friction.

Kinetic friction is always zero.

Kinetic friction acts before motion begins.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is true about the coefficient of friction (μ)?

The coefficient of static friction is always less than the coefficient of kinetic friction.

The coefficient of friction is the same for all material pairs.

The coefficient of friction is a dimensionless number that depends on the materials in contact.

The coefficient of friction is always greater than 1.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation represents the static friction force?

Fs = μk x Fn

Fs = μs x Fn

Fs = μs + Fn

Fs = Fn / μk

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Once an object starts moving, the force of friction that acts on it is:

Static friction

Rolling friction

Kinetic friction

No friction acts once the object is moving

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the video, what factor does NOT significantly affect the frictional force between two surfaces?

The roughness of the surfaces

The normal force

The area of contact between the surfaces

The type of materials in contact

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