Units of speed are always a unit of length per unit of time. Different units of length and time may be chosen depending on the situation. This makes it easier to read the measurements. For example ...

The film explains the concept of uniform motion, highlighting that it involves an object moving in a straight line at a constant speed. Examples include a jet and a car that move equal distances in ...

An object moving in a circular orbit at a constant speed has a changing velocity. This is because velocity is a vector quantity that depends on speed and direction. The object in orbit is ...