Foundation Science Primary 6 Interactions

Which of the following is an effect of frictional force?

A It makes a moving object speed up.
B It helps a moving object to stop.
C It pulls objects towards the Earth.
D It causes an object to change its mass.
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Worked Solution

Step 1: Friction is a force that opposes motion between two surfaces in contact. Step [2-9]: Because it opposes motion, it acts to slow down or stop a moving object. Step [2-9]: Correct answer is stopping a moving object.

Correct answer: It helps a moving object to stop.

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