What is the term used for the act of going from a stationary position to moving at full speed?

The term used for the act of going from a stationary position to moving at full speed is acceleration. Acceleration refers specifically to the rate of change of velocity, which includes both the increase in speed and any changes in direction. When an object starts from rest and increases its speed, it is experiencing acceleration. This process can apply to various contexts, such as a sprinter starting a race or a car accelerating from a stoplight.

Velocity, on the other hand, is a vector quantity that combines both speed and direction but does not specifically refer to the process of starting from rest. Momentum relates to the quantity of motion an object has, which is dependent on both its mass and velocity, making it a broader concept that doesn't pinpoint the transition from stationary to motion. Speed simply refers to how fast an object is moving, without considering the context of its change from rest. Thus, acceleration accurately encapsulates the act of transitioning from a stationary state to full motion.