Standard Science Primary 6 Interactions

Why do athletes wear shoes with spikes on the soles when running on a track?

A To make the shoes lighter.
B To allow them to slide more easily.
C To increase the friction between the shoes and the track.
D To reduce the force of gravity acting on them.
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Worked Solution

Step 1: Spikes provide a rougher surface and grip the track. Step [2-9]: Increasing the roughness increases frictional force. Step [2-9]: Higher friction prevents slipping and allows the athlete to push off more effectively.

Correct answer: To increase the friction between the shoes and the track.

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