A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, each angled 30 from the vertical. The landing craft is pointing upward, as shown. A total upward thrust of 14460 N is required for the landing craft to descend at constant speed. When the landing craft has a total upward thrust of 1460 N, the landing craft%u2019s acceleration is ?1.42 m/s2, (its speed will be increasing if its velocity is downward toward the surface of planet Penitgy). If the craft is descending vertically downward, what is the mass of the landing craft?