And Astronaut wearing an environment suit has a total mass of 130 kg. What is his weight on earth?

What would his weight be on Mars where the acceleration of gravity is 3.26?
What is his mass on Mars? Why?
If he should end up adrift and deep space what what his mask be? Why?

2 answers

weight on earth=mass*9.8N/kg
weight on Mars=mass*3.26 N/kg
mass stays the same: it is a measure of the total matter, does not depend on gravity.

notice acceleration=force/mass, so
9.8m/s^2=9.8Newtons/kg
An object acted on by a force of 2.8 N accelerates, 3.6 m/s2. What is the mass of the object?