The colonization of Mars is a favorite topic among science fiction writers. It is a smaller planet than Earth and further from the Sun. Its radius is 0.5 times that of Earth, and its mass is 0.1 times that of Earth. It is 1.5 times further from the Sun than Earth. (Note: On Earth, the acceleration due to gravity is 10 m/s2. Also, we have G = 6.67 x 10–11 N m2/kg2.)
If a person were standing on the surface of Mars and dropped a Martian rock, what is the approximate acceleration of the rock's fall?