2. An astronaut is piloting her spacecraft toward the International Space Station. To stop the spacecraft, she fires
the retro-rockets, which cause the spacecraft to slow down
from 20.0 m/s [E] to 0.0 m/s in 12 s. 67
(a) What is the acceleration of the spacecraft?
(b) What is the displacement of the spacecraft when it
comes to rest?

Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j