Question

How does frictional force affect the velocity of an object?

Answer 1

Hint: In order to write down the correct answer for the given question, we need to first know about the frictional force and its effect. Then only we can compare the effects with the velocity and finally conclude with the answer.

Complete answer:
First of all we need to define the frictional force.
We define frictional force of a body as the resisting force relative to the motion of a body.
Now we need to relate the force of friction with the velocity.
As, we know that frictional force is the resisting force, so it will affect the velocity.
Now, when no force is applied in the direction of the motion in that case there will not be any velocity. It means the velocity will be zero.
Now, if the frictional force is applied in the direction of motion, but the value of applied force is less than the force of friction, then it will cause the velocity to become zero.
Now, in another case if the applied frictional force is in the direction of motion, but the value of applied force is more than the frictional force, then the velocity will increase in that case.

Note: The velocity of an object is defined as the rate of change of its position with respect to time. Velocity is a vector quantity as it has both direction and magnitude. The velocity of an object can be zero but the speed cannot be zero.