Variable velocity is the measurement of the rate of change of an object's position over time. It takes into account the changes in speed and direction of an object as it moves.
The concept of variable velocity was introduced by the famous physicist Sir Isaac Newton in his Second Law of Motion. He described how an object's velocity can change when acted upon by a force.
Variable velocity is different from constant velocity in that it takes into account the changes in speed and direction of an object, while constant velocity refers to an object moving at a steady speed in a straight line.
Some real-life examples of variable velocity include a car accelerating or decelerating, a roller coaster changing speeds and direction, and a ball being thrown in the air and coming back down.
The concept of variable velocity is important in science because it helps us understand how objects move and interact with each other. It is also crucial in fields such as physics, engineering, and astronomy for predicting and analyzing the motion of objects in the natural world.