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Berurutan

Pretest : Friction

Auliya Rahmah

120

Pertanyaan yang ditambahkan (4/ 20)

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Pertanyaan 1

Pilihan ganda

Which of the following sentences about friction is not correct?

Friction can make an object get hotter.
Friction wears car tyres away.
Friction slows down a ball rolling in grass.
Friction can speed up a falling object.

Pertanyaan 2

Pilihan ganda

Which of these would produce the most friction when they rub together?

a rough surface and a smooth one
two smooth surfaces
two rough surfaces
two smooth surfaces with oil between them

Pertanyaan 3

Pilihan ganda

Which example shows unhelpful friction?

friction between a tyre and the road
friction in the wheel axles of a bicycle
friction between paper and the point of a pencil
friction between your shoes and the floor

Pertanyaan 4

Pilihan ganda

Which of the following is not an example of a lubricant?

grease for bicycle chains
rubber on car tyres
water on swimming pool tiles
oil in a car engine

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