Ability to perform a movement in one direction in the shortest period of time

Speed

Explanation:

"Speed" refers to the rate of a person or thing in doing something or it could also mean how fast a person or thing can do something. This is an important topic in Physics.

Speed can be calculated by dividing distance (the distance covered) over time (the elapsed time). This definition was stated by Galileo Galilei, an Italian physicist.

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