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 produces heat between two surfaces.
C It acts in the same direction as the motion.
D It only acts on magnetic materials.
Show Worked Solution

Worked Solution

Step 1: Recall the effects of friction. Step [2-9]: Friction generates heat when surfaces rub together. Step [2-9]: It also opposes motion and wears away surfaces.

Correct answer: It produces heat between two surfaces.

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