Velocity

VelocityVelocity is the rate of change of displacement with time and... More is the rate of change of displacement with time and it involves the idea of direction. While speed describes only how fast an object is moving, velocityVelocity is the rate of change of displacement with time and... More gives both how fast and in what direction the object is moving.

If a car is said to move at 60km/h to the north, its velocityVelocity is the rate of change of displacement with time and... More has now been specified. To have Constant velocityVelocity is the rate of change of displacement with time and... More, an object must have a constant speed in constant direction. Constant direction constrains the object to motion in a straight path (the object’s path does not curve). Thus a constant velocityVelocity is the rate of change of displacement with time and... More means motionMotion is the act of changing location from one place to ano... in a straight line at a constant speed.

If there is a change in speed, direction or both, then the object is said to have a changing velocityVelocity is the rate of change of displacement with time and... More and is undergoing acceleration. The SI unit of velocityVelocity is the rate of change of displacement with time and... More is the same as the one for speed (m/s) and the symbol of velocityVelocity is the rate of change of displacement with time and... More is v.