The density of a body is represented by the expression :
A body of mass m moving with a speed v suffers an inelastic collision with another body of mass M=2m at rest. The speed of the composite body will be
A body of density d and volume V floats with volume V1 of it immersed in a liquid of density d1 and rest of the volume V2 immersed in another liquid of density d2(<d1) then V1 is