Density, Weight, Mass

1. Definition of Weight: Gravitational force acting on the object

1.1. Gravitational Field: A region in which a mass experiences a force due to gravitational attraction

1.2. SI Unit:Newton

1.3. Formula: w=mg

2. Definition of Mass: Amount of matted in a body

2.1. SI Unit: Kg

3. Inertia: The reluctance of an object to change its state of rest or motion, due to its mass.

4. Density: Mass per unit volume

4.1. Fomular : P= m/v where p is the density, m is the mass and v is the volume