Why Do We Lean Forward When a Bus Stops? Unpacking Newton's Law of Inertia

• When a moving bus suddenly stops, passengers lean forward due to 'Inertia', a fundamental concept in physics.
• Inertia, described by Newton's First Law of Motion, is an object's resistance to changes in its state of motion or rest.
• Your body, moving with the bus, tries to maintain its motion when the bus brakes, causing the forward lurch.
• Conversely, when a stationary bus starts, you lean backward due to the 'inertia of rest', as your body tries to remain stationary.
• Everyday examples of inertia include dust falling from a shaken blanket, fruit falling from a tree, and a coin dropping into a glass when a card is flicked.