Reference Frame

A reference frame is a system used to measure the position, motion, and other properties of objects. It provides a perspective from which observations are made. For example, if you're standing still and watching a car drive by, you're in your own reference frame. If you were in the car, your reference frame would be different, as you would perceive yourself as stationary and the world outside as moving. Reference frames can vary based on speed or gravity, which is crucial in physics for understanding how objects relate to one another in space and time.