Part 1.
When a vehicle is passing through the atmosphere, at some point itmay decelerate at a rate of 49.2 m/s2 (away from thecentre of Earth) while Earth's gravitational pull remains at -9.80m/s2.
a) In such a situation, what is the apparent weight in g'sof an astronaut inside the vehicle?
b) In this situation, is the astronaut in a micro-gravitysituation.
Part 2.
A space vehicle is in orbit around a planet and moving in aclockwise fashion. If the vehicle wants to move to a lower orbit,should the first rocket firing aim to decelerate or accelerate thevehicle, and similarly, what should the second firing of therockets aim to do?
Part 3.
If a space vehicle re-enters Earth's atmosphere at too shallow anangle, what will happen to the vehicle and why?
Part 4.
In using the gravitational field of a planet to propel a vehiclefarther into space, what two important quantities areconserved?
Part 5.
What is it about the position of the three antennas in NASA'sDeep Space Network (DSN) that allows Earth-based observers to keepin contact with vehicles deep in space?
