A manned earth-to-orbit vehicle is designed so that its acceleration never exceeds 29.8 m/s in its ascent. Due to training a orange advanced crew escape suit will never weigh more than 248 lbs. How much weight must an astronauts launch seat be designed to hold during take off ?(in Newtons)

a and b sometimes have a positive value

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d