Question

When the force applied by the moving vehicle is calculated, the actual force applied by the brakes may be slightly less than the one calculated theoretically. Why?

A

Due to opposing force of friction

B

Because action and reaction pair are never equal

C

Due to mass of the body

D

Because force of friction is in the direction of motion

Solution

The correct option is A Due to opposing force of friction  Force of friction is always opposite to the relative motion. Hence, force of friction acts as a brake in this case, so less force is required through brakes to stop the vehicle.

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