Answer:
Gravitational field strength:
Moon is 1.6N/kg
Earth is 9.8N/kg or 10N/kg
Moon:
Weight = mass x gravitational field
1500N = m x 1.6N/kg
รท1.6 both sides
937.5 = m
Mass of astronaut is 937.5kg
(Your mass doesn't change, no matter where you go, in space)
Earth:
Weight = mass x gravitational field
= 937.5kg x 9.8 N/kg
= 9187.5N
Or
Weight = mass x gravitational field
= 937.5kg x 10 N/kg
= 9375N
Thus, the astronaut's weight will be 9187.5N or 9375N on Earth.
Hope this helps!