What Makes Things Move

Forces are pushes or pulls that can make objects move, stop, or change direction. Motion is how objects change position over time. Energy is needed to make things happen, like moving a bike or powering a computer.

Types of Forces

• Gravity: Pulls objects toward each other (like us to the Earth).
• Friction: Slows things down when two surfaces rub.
• Magnetism: Attracts or repels certain metals.

Energy in Action

Energy comes in many forms: kinetic (movement), potential (stored), thermal (heat), and more. The Law of Conservation of Energy states that energy can't be created or destroyed, only changed from one form to another.

Applications

Engineers use these principles to build safe cars, roller coasters, and even rockets.