Question

What is velocity?

Answer 1

`"Velocity" = (" Change in displacement " or trianglebarx)/( "Change in time " or trianglet )`

Explanation:

To define the fastness of an motion , we need to find how fast the space coordinates ( position vector ) of a particle relative to a fixed reference point changes with time . It is called as " Velocity ".

Velocity is also defined as the rate of change of displacement .

Velocity is a vector quantity . It depends on both magnitude and direction of the object .

When a particle moves , it's positive vector `barr` must change in direction or magnitude or both ,Velocity is defined as the rate of change in direction or magnitude of `barr` with respect to time .

It is measured in `ms^-1` , `kmph` , `" miles per hour "` ,etc.

It has dimensional formula - `[M^0L^1T^-1]`
or simply - `[LT^-1]`