NASA's KC-135 Reduced Gravity Research aircraft, affectionately known as the "Vomit Comet," is used in training astronauts and testing equipment for microgravity environments. During a typical mission, the aircraft makes approximately 30 to 40 parabolic arcs. During each arc, the aircraft and objects inside it are in free-fall, and passengers float freely in apparent "weightlessness." The figure below shows the altitude of the aircraft during a typical mission. It climbs from 24,000 ft to 30,850 ft, where it begins a parabolic arc with a velocity of 150 m/s at 45.0 nose-high and exits with velocity 150 m/s at 45.0 nose-low. Altitude (ft) 45 nose high 45 nose low 31 000 24.000 Zero g 65 Maneuver time (s) i (a) What is the aircraft's speed (in m/s) at the top of the parabolic arc? 106.1 m/s (b) What is the aircraft's altitude (in ft) at the top of the parabolic arc? 1883.2 You found the change in height from the start of the parabolic arc to the maximum height. How can you use this to find the maximum altitude above ground? ft (c) What is the time (in s) spent in microgravity? S