Chapter 1: Motion Brief: Motion describes how objects move – speed, velocity, acceleration, and equations of motion. Formulas & Explanations: Speed – how fast an object moves: s = speed, d = distance, t = time. Velocity – speed with direction: Acceleration – change of velocity
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Centripetal Force Force acting towards the centre of circular path. Example: Moon revolves around Earth due to Earth’s centripetal force. Newton’s Observations Apple falls because Earth attracts it. Apple also attracts Earth (Newton’s 3rd law). Conclusion: All objects attract each other → Gravitational Force. Universal Law
Read More.🧬 The Fundamental Unit of Life – Detailed Notes (Class 9) 🧠 Why Study Cells? Every living being, from a tiny bacterium to a huge whale, is made up of cells. These cells are the building blocks of life. Just like bricks form buildings, cells form
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