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A person who has a weight of 165 pound-force [lbf] 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 per 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 [lbf], of the person on Mars? The gravity of Mars is 3.71 meters per second squared [m/s2].
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