The definition of acceleration is: Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

How is acceleration a vector quantity?

Acceleration is a vector quantity because it has both magnitude and direction. When an object has a positive acceleration, the acceleration occurs in the same direction as the movement of the object. ... When the ball is traveling upward, acceleration is in the opposite direction, and the ball slows.

Is it true that acceleration is a vector quantity?

Acceleration is a vector quantity. ... The direction of the acceleration vector is dependent upon two factors: the direction the object is moving and whether the object is speeding up or slowing down. An object which is slowing down has an acceleration.