9th class physics notes. See discription firstly

Important terms
1Universal law of gravitation and its expression
2Gravitational law of motion
3 Derivation of eq of motion
4 acceleration due to gravity
5 Law of conservation of linear momentum
6 Newton s second law of motion and its expression
7 Newton’s law of gravitation
And some difference
Distance and displacement
Mass and weight
Speed and velocity
Uniform and non uniform motion
Balanced and unbalanced forces

firstly