Motion Class 9 | Physics Class 9 | Motion Physics
( I recommend all mobile users to read notes in landscape mode)* MOTION ✓We specify the position of an object with respect to a fixed point as the reference point called the origin. ✓A body is said to be in motion if it changes its position continuously with respect to the origin with the passage of time. ✓A body said to be at rest if it does not changes its position continuously with respect to the origin with the passage of time . Types of physical quantities 1. Scalar: It is described completely by its magnitude. Ex:- Length, Time, Area 2. Vector: It is represented by number, unit, and direction. Ex:- Force, Displacement ✓ There is a possibility of the addition and subtraction of vector. Example: There are two forces F1 and F2. F1 = 45 Newton Left ...