Standard Science Primary 6 Interactions

Siti observed that it was harder to push a heavy box across a carpeted floor than across a tiled floor. Which of the following best explains her observation?

A The tiled floor is smoother and exerts less frictional force.
B The carpeted floor exerts more gravitational force.
C The box has more mass on the carpeted floor.
D The carpeted floor is a better conductor of heat.
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Worked Solution

Step 1: Recognize that carpet is rougher than tile. Step [2-9]: Rougher surfaces exert more frictional force against moving objects. Step [2-9]: Less friction on tiles makes it easier to push.

Correct answer: The tiled floor is smoother and exerts less frictional force.

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