# Velocity

When discussing electromagnetic waves, velocity encompasses both the magnitude and direction of propagation, providing a complete description of the wave’s displacement. On the other hand, speed represents the magnitude of motion but does not consider the direction in which the wave is propagating.

##### Velocity
• Velocity is a vector quantity that refers to the rate at which an object changes its position with respect to time.
• It includes both the magnitude (speed) and direction of an object’s motion.
• Velocity describes the displacement of an object per unit of time in a specific direction.
• Velocity can be positive or negative, representing motion in different directions.
• Velocity is measured in units such as meters per second (m/s), kilometres per hour (km/h), or miles per hour (mph), along with an indication of direction.
##### Speed
• Speed is a scalar quantity that refers to the rate at which an object covers distance.
• It is the magnitude of the displacement of an object per unit of time.
• Speed does not consider the direction of motion, only the rate at which an object moves.
• Speed is always positive or zero, representing the magnitude of motion.
• Speed is measured in units such as meters per second (m/s), kilometres per hour (km/h), or miles per hour (mph).
###### References
• When discussing electromagnetic waves, velocity encompasses both the magnitude and direction of propagation, providing a complete description of the wave’s displacement. On the other hand, speed represents the magnitude of motion but does not consider the direction in which the wave is propagating.
##### Velocity
• Velocity is a vector quantity that refers to the rate at which an object changes its position with respect to time.
• It includes both the magnitude (speed) and direction of an object’s motion.
##### Speed
• Speed is a scalar quantity that refers to the rate at which an object covers distance.
• It is the magnitude of the displacement of an object per unit of time.