9th Sci. Chapter 1: Laws of Motion, Notes -2. ➖♾️⭕ЁЯФШ⭕♾️➖ ✺༺☬༒☬༻✺ ✍ЁЯП╗... рд╡िрдЬ्рдЮाрди рд╡िрд╖рдпाрдЪ्рдпा рдоाрд╣िрддीрд╕ाрдаी рдЦाрд▓ीрд▓⬇️ рд▓िंрдХрд▓ाЁЯЦЗ️ рд╕्рдкрд░्рд╢ рдХрд░ा. ЁЯСЙЁЯЦК️. рдоाрд╣िрддी рд╡िрдЬ्рдЮाрдиाрдЪी ЁЯО╖ ☬✧°══✺══°✧☬ 1. Basic Concepts of Motion Distance : Length of the actual path traversed by an object in motion. (Scalar quantity) Displacement : Minimum distance from the starting point to the final point. (Vector quantity) Speed: Speed = Distance / Time Scalar quantity, SI unit: m/s Velocity: Velocity = Displacement / Time Vector quantity, SI unit: m/s Acceleration : Rate of change of velocity. a = v - u / t SI Unit: m/s² ❀꧁✧꧂❀ 2. Newton’s Laws of Motion: ЁЯеЗFirst Law (Law of Inertia): An object continues to remain at rest or in a state of uniform motion along a straight line unless an external unbalanced force acts on it. ЁЯеИ Second Law : The rate of change of momentum is proportional to the applied force, and the change of momentum occurs in the direction of the force. Formula: ...