Displacement is a vector quantity that measures the change in an object's position from its original starting point to its final position. It is usually denoted by the symbol "Δx".
Displacement and distance are often confused, but they are different concepts. Distance is a scalar quantity that measures the total length of the path traveled by an object, while displacement is a vector quantity that measures the change in an object's position from its starting point to its final position.
Velocity is a vector quantity that measures the rate of change of an object's displacement over time. It is usually denoted by the symbol "v" and is expressed in units of distance per time (e.g. meters per second).
Velocity and displacement are closely related, as velocity is the derivative of displacement with respect to time. In other words, velocity is the rate of change of displacement over time.
Acceleration is a vector quantity that measures the rate of change of an object's velocity over time. It is usually denoted by the symbol "a" and is expressed in units of distance per time squared (e.g. meters per second squared).