Jun Jie noticed that the soles of his old running shoes were very smooth compared to his new ones. How does this affect his running on a wet track?
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Worked Solution
Step 1: Identify the change in the surface (smooth soles).
Step 2: Recall that smooth surfaces provide less friction than rough ones.
Step 3: On a wet track, lower friction makes it harder for the shoes to grip the ground, increasing the risk of slipping.
Correct answer: It decreases friction, making it easier to slip.
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