inertial frames

Inertial frames are perspectives in which objects move without any external forces acting on them, meaning they either stay at rest or continue moving at constant speed in a straight line. Imagine a car driving smoothly on a highway; it can be considered an inertial frame as long as there are no bumps or turns. In physics, inertial frames are crucial for understanding motion and forces. They help distinguish between different types of motion, making it easier to analyze situations and apply the laws of physics, such as Newton's laws, which describe how objects behave under various conditions.