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Average velocity is def.ined as the ratio of total displacement to total time taken.

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Average velocity is the distance traveled divided by the time it takes to travel that distance. Average velocity is also called "velocity".

Average velocity is the distance travelled divided by the time of measurement

Q: What is average velocity?

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An object moving in a circular path at constant speed will have a non-zero average speed and zero average velocity since velocity is a vector parameter,

Because squaring a velocity removes its sign. A velocity may be negative, but it's square is always positive. If two velocities are +5 and -5, their average is zero. But both squares are +25, so the average square is +25.

That is the case when you are talking about instantaneous speed and velocity - or when the velocity is constant. In the case of an average speed and velocity, this relation does not hold.

its the velocity

Yes, since velocity is speed and direction its average can be zero. For example say a plane flies from point A to point B at 300 mph and turns around to go from B to A at 300 mph; its average velocity is 0 since it is in the same spot as it started ( the velocity vectors cancel) but its average speed is 300 mph.

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For the instantaneous value of average velocity, average speed and average velocity are equal.

Velocity is speed and its direction. Average velocity is average speed and its direction.

Always.

The term "velocity", as used in physics, DOES have an associated direction. Most derived terms, such as "average velocity", also do.

velocity is a vector and speed is scalar. Velocity has magnitude and directions, with magnitude being speed. The magnitude of average velocity and average speed is the same.

The speed of something in a given direction.

The average velocity over an time interval is the average of the instantaneous velocities for all instants over that period. Conversely, as the time interval is reduced, the average velocity comes closer and closer to the instantaneous velocity.

Average Velocity is displacement over total time.

what is magnitude of average velocity

No. Average velocity is still a velocity.Distance is a product of (a velocity or speed) times (a length of time).

The instantaneous velocity is the limit of the average velocity, as the time interval tends to zero. If you are not familiar with limits, basically you make the time interval very small and calculate the average velocity.

Average velocity equals the average speed if (and only if) the motion is in the same direction. If not, the average speed, being the average of the absolute value of the velocity, will be larger.