Chapter 8, Problem 5RQ

A person who has a weight of 165 pound-force [lb_f] on Earth is travelling to Mars in a spacecraft. As long as the engines on the spacecraft are not operating, the person is essentially weightless during the voyage. During a course correction, the spacecraft undergoes an acceleration of 0.72 “g”. The term “g” is the Earth-normal gravity, so 1 “g” is 9.8 meters pe^r second squared [m/s²]. This acceleration makes it “feel” like there is gravity in the spacecraft, and the person will have a perceived weight during the acceleration period, rather than feeling weightless.

Once the person reaches Mars, what is the mass, in units of kilograms [kg], and weight in units of pound-force [lb_f], of the person on Mars? The gravity of Mars is 3.71 meters per second squared [m/s²].