This article needs additional citations for
As a change of direction occurs while the racing cars turn on the curved track, their velocity is not constant.
|v, v, v→|
|Part of a series of articles about|
The velocity of an object is the
Velocity is a physical
To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed.
For example, a car moving at a constant 20 kilometres per hour in a circular path has a constant speed, but does not have a constant velocity because its direction changes. Hence, the car is considered to be undergoing an acceleration.