Q.

An object is moving from north to south. What is the direction of the force of friction on the object?


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a

North to south

b

South to north

c

North to east

d

South to east 

answer is B.

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Detailed Solution

An object is moving from north to south, and the force of friction on the object is from south to north.
Friction is the type of force that regulates the relative motion between two bodies. Friction force always acts against the direction of motion. It works like a brake force for a moving object. The friction force direction is always the opposite of the direction of the motion. Here the object is moving from north to south, so the direction of friction force will be from the south to north.
 
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