fattydq said:
An astronaut weighing 80.6kg on Earth would weigh approximately 294N on Mars, with a third significant figure rounded up to 3 sig figs.
An astronaut weighs less on Mars due to the lower gravity on the planet compared to Earth. Mars has about 38% of the gravity on Earth, so objects and people weigh less there.
The weight of an astronaut on Mars is measured using a scale or balance, just like on Earth. However, the weight will be different due to the difference in gravity between the two planets.
Using 3 significant figures in the weight calculation ensures that the answer is accurate and precise to the nearest 10N. It also avoids rounding errors that may occur if fewer significant figures are used.
Yes, the weight of an astronaut on Mars can change depending on their location on the planet. The weight may also change if the astronaut picks up or carries objects with different weights, as the total weight will then be the combined weight of the astronaut and the objects.