When an object moves in a straight line at a steady speed, you can calculate its average speed if you know how far it travels and how long it takes., Average speed is distance divided by time., Velocity is speed in a given direction., Acceleration is change in velocity divided by time., A quantity that has magnitude but no particular direction is described as scalar., A quantity that has magnitude and acts in a particular direction is described as vector., Speed is a scalar quantity, it is the rate of change in the distance travelled by an object., Velocity is a vector quantity, it is the speed of an object in a particular direction., Distance is a scalar quantity, it is just the length of the path travelled by an object., Displacement is a vector quantity, it is the length of a straight line from where an object started to where it finishes.,

Speed, Velocity, Distance and Displacement

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