Question

3.1.4 quiz: noncontact forces
question 6 of 10
a space rover weighs less on mars than it does on earth. which statement explains this difference?
a. the rover is farther from earth.
b. the mass of mars is less than the mass of earth.
c. the rover has less mass on mars.
d. the gravitational constant is smaller on mars than on earth.

Explanation:

Weight is the force due to gravity, calculated by $F = mg$ (where $m$ is mass and $g$ is gravitational - acceleration). The mass of an object is constant. Gravitational acceleration depends on the mass of the planet and the distance from its center. Mars has a smaller mass than Earth, resulting in a lower gravitational acceleration on Mars. So, the rover weighs less on Mars.

Answer:

B. The mass of Mars is less than the mass of Earth.