What is acceleration? What is declaration ? What is retardation? What is velocity? What is constant velocity ?

Rate of Change of velocity with respect to time is called acceleration.

Velocity can be changed by 3 ways

1/ increasing velocity

2/ decreasing velocity (which is called deceleration)

3/ by changing direction of velocity

So most of the children get confused in uniform circular motion the word uniform means (same) so how there can be acceleration?

So in uniform circular motion acceleration is due to change in direction of velocity hence we can say directional acceleration.

The word uniform means:

    Same magnitude

    Direction may or may not change

The word constant means:

     Same magnitude

     Same direction

So uniform velocity means same magnitude direction may or may not be changed.

                     AND

Constant velocity means:

      Same magnitude

      Same direction