The body of mass 25 kg is taken from the earth to the moon. If the value of g on moon is 1.6 ms^-2 then the weight of the body on moon is :

1. 50 N
2. 100 N
3. 40 N
4. 60 N

The relationship between weight and mass is :

1. W = m
2. W = mG
3. W = mg
4. m = Wg

The mass of a body :

1. changes with a change of place
2. changes with direction
3. changes when the velocity of the body is close to the velocity of light
4. none of these

Identify the correct statement from the following :

1. Mass is a force and is measured in Newton.
2. The weight of a body is the same everywhere in the universe.
3. Mass remains constant, but weight changes with gravity.
4. Weight is measured using a physical balance.