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Gravitation | Mass, Weight and Weightlessness | Class 9
MASS The mass of a body is the quantity of matter contained in it. Mass is a scalar quantity. The unit of mass is kilogram. A body contains the same quantity of matter whether it be on the earth, moon or even in outer space. Thus, the mass of a body is constant and does…
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Gravitation | Equation of Motion of freely falling Bodies | Class 9
Equation of Motion of freely falling Bodies When the bodies are falling under influence of gravity, they experience acceleration g i.e. 9.8 . However, when these are going up against gravity they move with retardation of 9.8 . All the gravitation of motion already read by us are valid for freely falling body with the…