CBSE Class 9 Science Physics Gravitation Notes
GRAVITATION NEWTON’S UNIVERSAL LAW OF GRAVITATION Every object in the Universe attracts every other object with a force which is (i) directly proportional to the product of their masses, and (ii) inversely proportional to the square of the distance between their centres.…
CBSE Class 9 Science Physics Force And Law Of Motion Notes
FORCE AND LAWS OF MOTION Force and Laws of Motion Chapter Notes Key Learning: 1. Force is a push or pull acting upon an object. 2. Balanced forces: The resultant of all the forces acting on a body is zero. 3. Unbalanced forces: The resultant of all the forces…