Answer the following questions. Mark on the screen. You may change
your mind and re-mark before you hit the "grade test" button.
Suppose the spaceshuttle is in circular orbit about the Earth, located at point O in the drawing. When the shuttle reaches point A in its orbit, it deploys a satellite straight out ahead of it. Which choice shows what the new orbit of the satellite looks like?
NASA has planned an unusual fuel-saving maneuver to drop a satellite, initially in circular orbit about the Earth (Point O), straight down onto the Earth. To accomplish this, a double-thrust maneuver will be used, and the trajectory will be as shown in the figure. Which of the following choices best describes the maneuver?
The satellite brakes slightly at A and then again at E.
The satellite speeds up at A and brakes to 0 speed at E.
The satellite brakes at B and brakes to 0 speed at D.
The maneuver is impossible.
None of these.
Suppose a satellite (m
= 800 kg) is in a circular orbit 200 km above the surface of the Earth. How much energy is required in order to boost the satellite into a circular orbit 400 km above the surface of the Earth?
1.3 x 10
7.1 x 10
4.0 x 10
8.0 x 10