Definition: The term "acceleration" is a noun that refers to changes in speed or direction, often involving an increase in velocity or acceleration. Specifically, it describes an object moving at a faster rate than its initial velocity. This can result from various factors such as gravity acting on objects, changes in the shape of objects (such as those rotating), or even changes in the material properties of materials like metal, rubber, or plastic that cause an increase in friction. The acceleration experienced by an object is measured in units called meters per second squared (m/s²) and can be positive, negative, zero, or undefined depending on the nature of the change. For instance, a car accelerating from rest to a speed of 70 km/h would experience a net upward acceleration of approximately 15 m/s². The term "acceleration" is often used in physics, engineering, and other fields to describe the rate at which an object changes its state (its velocity, position, direction, etc.). It can also be used to describe the effects of forces on objects or systems.

accelerations