Forces and motion govern how everything in the universe moves, stops, and interacts. Understanding these basics is essential for mastering physics. 🌟 Core Principles of Motion Position is where an object is located. Speed measures how fast an object moves. Velocity is speed in a specific direction. Acceleration is any change in velocity. Deceleration means an object is slowing down. 🏋️ Understanding Forces Forces are simple pushes or pulls. Contact forces require physical touch like friction. Non-contact forces act from afar like gravity. Net force is the sum of forces. Balanced forces cause no change in motion.
Unbalanced forces always cause acceleration or deceleration. 📜 Newton’s Three Laws of Motion First Law: Objects resist changes to their motion. Inertia is the term for this resistance. Second Law: Force equals mass times acceleration ( Heavier objects require more force to move. Third Law: Actions have equal and opposite reactions. 🌪️ Common Environmental Forces Gravity pulls objects toward each other. Friction resists sliding motion between touching surfaces. Air resistance slows down objects moving through air. Tension pulls through ropes, strings, or cables.
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