Standard Science Primary 6 Interactions

Siti pushed a 500g block across four different surfaces with the same amount of force. The distance moved by the block was recorded. On which surface would the block likely move the SHORTEST distance?

A Sandpaper
B Glass
C Smooth plastic
D Polished marble
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Worked Solution

Step 1: Frictional force opposes motion. Step 2: Rougher surfaces produce more friction. Step 3: Sandpaper is the roughest surface here, so it will produce the most friction and result in the shortest distance.

Correct answer: Sandpaper

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