FRICTION

QuizÂ by Seema Chhallany

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6 questions
• Q1

Why is it harder for the boy in Image B to get down the hill?

Work

Displacement

Motion

Friction

45s
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• Q2

Friction is a force that acts in an ___________ direction of movement.

west

similar

opposite

parallel

45s
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• Q3

What are 2 factors that determine the amount of friction between 2 objects?

Force and roughness between surfaces

Hills and valleys and how smooth or rough the surface is

Amount of force and amount of surface the comes in contact

The force and the weight exerted on the surfaces

45s
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• Q4

Which of the following is an example of friction that is harmful?

Pencil marking on paper

Engine parts wearing out

Using an eraser to erase marks

Sand placed on ice in the winter

45s
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• Q5

How can friction be reduced?

all of the above are ways of reducing friction

use wax, grease or oil

reduce the force acting between the 2 surfaces

reduce the roughness of the 2 surfaces coming in contact

45s
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• Q6

You can walk because there is friction between your __________ and ______________

feet and air

feet and ground

ground and air

air and ground

45s
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