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When the velocity changes. And the velocity will change when the forces on an object change. For instance, some types of friction forces change as a function of velocity.

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Related Questions

What is the difference between uniform velocity and on uniform velocity?

I assume you mean "non-uniform". "Uniform" simply means that the velocity (in this case) doesn't change.


Does a body moving with uniform acceleration have momentum?

Yes, a body moving with uniform acceleration has momentum. Momentum is the product of an object's mass and its velocity, and acceleration is the rate of change of velocity. As long as the object is moving and has mass, it will have momentum.


What is varaible velocity?

Non uniform velocity is known as variable velocity.


How is average velocity of a body calculated when its velocity changes at a non-uniform rate?

The average velocity of a body with non-uniform acceleration can be calculated by taking the average of the initial and final velocities over the time interval. This is done by adding the initial and final velocities and dividing by 2. Mathematically, the formula for average velocity is (v_initial + v_final) / 2.


What is the definition of non uniform motion in physics?

During uniform motion, velocity is constant, so there is zero acceleration. Non-uniform motion involves a change in velocity, which means there is acceleration. Accelaration is a change in velocity. A change in velocity occurs when a body slows down, speeds up, or turns (changes direction), or a combination of these.


When does a particle in motion have non-uniform velocity?

That simply means that its velocity is changing.


What is non-uniform circular motion?

That means that something moves in a circle, but that the velocity is not uniform.


What is the Distinguish between uniform and non uniform motion?

In uniform motion, the velocity of the object is constant: both in magnitude and in direction. In non-uniform one or other (or both) of these will vary.


Formula of non uniform motion?

The formula for non-uniform motion is given by: [ v_f = v_i + at ] where ( v_f ) is the final velocity, ( v_i ) is the initial velocity, ( a ) is the acceleration, and ( t ) is the time taken.


Can an object maintain uniform velocity when its acceleration is non zero?

No, an object cannot maintain uniform velocity when its acceleration is non zero. If an object is accelerating, its velocity will be changing over time, so it cannot maintain a constant velocity. Uniform velocity means the speed and direction of the object remains constant.


WHAT IS THE MEANING OF NON UNIFORM MOTION?

Non-uniform motion refers to an object moving at varying speeds and/or changing direction during its motion. This means that the object's velocity is not constant, unlike uniform motion where the velocity remains the same throughout.


What is unifom velocity?

Uniform velocity refers to a situation where an object travels in a straight line at a constant speed without changing its direction. This means that the object covers equal distances in equal intervals of time.