A spacecraft approaching the planet Saturn reaches Point A with a velocity vA of magnitude 68.8 x 103 ft/s It is to be placed in an elliptic orbit about Saturn so that it will be able to periodically examine Tethys, one of Saturn's moons. Tethys is in a circular orbit of radius 183 x 103 mi about the center of Saturn, traveling at a speed of 37.2 x 103 ft/s.

Determine
(a) The decrease in speed required by the spacecraft at A to achieve the desired orbit,
(b) The speed of the spacecraft when it reaches the orbit of Tethys at B.

Transcribed Image Text:

115 x 103 mi 183 x 103 mi Saturn Tethys O