👉 Non-deri-vatively is a term used in physics to describe a system that does not have a derivative or gradient, meaning it has no rate of change with respect to time. This contrasts with derivatives and gradients which indicate how much something changes as we move closer to its boundary. For example, consider the motion of a particle under constant acceleration. If we assume the particle is moving in a straight line at constant speed, we can use calculus to calculate the velocity and acceleration of the particle as
