Which of the following statements is incorrect?
$(a)$. Friction acts on a ball rolling along the ground
$(b)$. Friction acts on a boat moving on water
$(c)$. Friction acts on a bicycle moving on a smooth road
$(d)$. Friction does not act on a ball moving through air

AcademicPhysicsNCERTClass 8

Statement $(d)$. "Friction does not act on a ball moving through air" is incorrect. Because when a ball moves through the air, then air particles offer frictional force which is commonly said as air resistance.

raja
Updated on 10-Oct-2022 13:29:10

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