Define lenear momentum and state it S.I. unit.
Linear momentum of a body as the product of mass of the body and velocity of the body.
p = mv
The SI unit of linear momentum is kg m/s.
If Linear momentum is defined as 'mass x speed', can we state a principle of conservation of linear momentum as 'linear momentum of a system remains constant if no external force acts on it?
Define upthrust and state its S.I. unit.
Define the term 'pressure' and state its unit.