In the ellipse, the orbiting object covers the distance from one section to the next in the same amount of time. What can you deduce from this information about the velocity of the orbiting object in relation to its position in the ellipse? Hint: use terms aphelion (furthest from the star) and perihelion (closes to the star) in your answer.

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?