A person who has a weight of 159 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 0.74 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. What is the person's mass, in units of kilograms [kg], in the spacecraft while travelling to Mars when the engines are not running?

m=97.52Kg

Explanation: Weight is the amount of gravity acting on a body, which means weight varies when gravity varies. Mass is the amount of matter a body has and it doesn't vary.

To determine a person's mass in kilogram, transform Pound-force in Newton ([N] = kg.m/s²).

The relationship between the units is 1lbf = 4.448N, then:

W = 159*4.448

W = 707.232N

During the course correction, acceleration is 0.74g, i.e.:

a = 0.74*9.8

a = 7.252m/s²

Weight is the multiplication of mass and acceleration of gravity:

W=m*g

m = 97.52kg

The person's mass during the travel to Mars is 97.52kg.

answer; ///(74) degrees is your answer..

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.