When a car is moving East at -4 m/s^2
The velocity of an object is constant.
Measures the change in velocity per unit of time.
The velocity increases or decreases constantly.
A car moving right increasing its velocity constantly.
A car moving left increasing its velocity constantly.
When a car is moving West at 14 m/s^2
The acceleration is constant.
Is any change in the velocity vector, magnitude or direction.
Measures the change in displacement per unit of time.
Is the slope of a graph when displacement is in the y axis and time in the x axis.
An object moves equal distances per unit of time.
In this motion the magnitude of the velocity is the speed.