Na terra, um astronauta tem massa de 120kg. na lua, onde g= 1,6m/s (ao quadrado) sua massa e seu peso serão, respectivamente,
a) 120kg e 192n
b) 192kg e 192n
c) 120kg e 120 n
d) 192kg e 120n

a) 120kg e 192n

Explanation:

Mass is an intrinsec property of every object - it means that its value does not change if the object changes location. So, the mass of the astronaut is the same on Earth and on the Moon, so his mass is also 120 kg on the Moon.

On the other hand, the weigth of the astronaut is given by:

W = mg

where

m is the mass

g is the value of the acceleration of gravity

On the moon, g = 1.6 m/s^2, while we have m = 120 kg. Therefore, the astronaut's weight is

grav potential energy