Which of the following statement is incorrect?

Friction acts on a boat moving on water.

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Friction acts on a bicycle moving on a road.

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Friction does not act on a ball moving through air.

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Friction acts on a ball rolling along the ground.

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Solution

The correct option is C Friction does not act on a ball moving through air.
Frictional force is acting on moving objects through fluids (liquids and gases) is called fluid friction or drag. This force acts opposite to the motion of any object moving through the fluid. Hence, air drag is acting on the ball moving through air causing the ball to slow down.

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Similar questions

Q. Question 6
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.

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A force of 10 N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be:

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A)Friction is acting in the same direction
B)Friction is absent
C)Friction is greater
D)All of these

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