"Speed" & "Velocity" are the same thing, they were not "invented" but discovered so to speak through Theoretical physics.
velocity is speed with direction; velocity is a vector and speed is a scalar
Speed in a given direction is velocity.
Velocity and speed are not synonyms.
Speed has no direction, velocity does.
SPEED has the speed only; while VELOCITY has the direction and the speed.
Instantaneous speed is the magnitude of the velocity. Velocity also states the [direction] of the speed.
Speed in a given direction is called velocity.
Well velocity is basically the same thing as speed but with direction (velocity can be negative or positive and speed is always positive). l velocity l = speed So a change in velocity means a change in speed.
Velocity is speed with a direction
It is the speed or velocity at a particular instant.
Velocity (speed).
Velocity is speed with direction