9
QuizMultiple Choice

Friction

Question 9 • Mad 2017 Phy Sci B -33 SS

Olivia bought new gym shoes to play volleyball because she kept slipping when she ran in her old shoes. How will the new soles help solve the problem?

Answer
A
by increasing her speed to increase friction
B
by adding surface roughness to increase friction
C
by improving aerodynamics to decrease friction
D
by increasing lubrication to decrease friction

Explanation

Rougher soles grip the floor better, increasing friction between Olivia’s shoes and the playing surface. More friction helps prevent her feet from slipping when she runs. The correct choice is B, by adding surface roughness to increase friction.

AI-written and checked against the verified answer.

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