Is it true that frictional force always acts in the opposite direction to the direction of motion of the body?

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True

False

answer is A.

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Detailed Solution

The above statement is true.
Friction will always act in the opposite direction to movement, i.e. it opposes the motion of any object. For example, air resistance is a frictional force which opposes motion through the air.
Friction is a reaction force occurring due to the irregularities on the surfaces in contact, so it resists the relative motion between two surfaces to keep the body at rest. Therefore, friction is zero when the body is at rest.
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