Is weight a kg or Newton and what about mass?

Answer 1

In terms of physics, weight is expressed in Newtons and is synonymous with force. The weight of an object can change as related to the force of gravity (acceleration) acting upon it. Acceleration is expressed in meters per second squared and on Earth this is 9.8m/sec^2. In contrast, the moon's acceleration is about six times less powerful at about 1.62m/sec^2.

'Mass' is expressed in kilograms. For everyday objects and energies, mass describes the amount of matter in an object; an object's physical 'make-up'. Mass does not change. An astronaut's mass, his physical composition, does not change merely because he moves from the earth to the moon. But, his weight does change as a result of the decrease in gravitational force. His weight will be about six times less on the moon.

Answer 2

Weight is measured in Newtons, as it represents the force of gravity acting on an object. Mass, on the other hand, is measured in kilograms and represents the amount of matter in an object. Weight is dependent on gravity, while mass is a fundamental property of an object that remains constant regardless of the gravitational force acting on it.