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?

Due to opposing force of friction

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Because action and reaction pair are never equal

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Due to mass of the body

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Because force of friction is in the direction of motion

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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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Similar questions

Q. When a fast moving vehicle is suddenly stopped by force of

200 N

, it came to rest after travelling

1 m

. The magnitude of work done by the force is

200 J

A 1000kg vehicle moving with a speed of 20m/s is brought to rest in a distance of 50 meters:

(i) Find the acceleration

(ii) Calculate the unbalanced force acting on the vehicle.

Q. State whether given statement is True or False.
The actual force applied by the brakes may be slightly less than the calculated value.

A 1,000 kg car moving at a speed of $20 m s^{- 1}$ is brought to rest at a distance of 50 m, calculate the unbalanced force acting on the car and give a reason why the actual force applied by the brakes may be slightly less than that calculated?

Physics says that a body after travelling a short distance stops because of frictional force but according to some a body starts moving because of applied force to it and stops because the applied energy exhausts after travelling a certain distance.so which is true and explain why.

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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?

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.

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.