Question

multiple choice question which of the following corresponds to a positive radial velocity measurement? an object that is stationary relative to the observer an object moving toward the observer an object moving away from the observer an objects motion perpendicular to the line of sight

Explanation:

Radial velocity is the velocity of an object along the line - of - sight of the observer. By convention, a positive radial velocity means the object is moving away from the observer, while a negative radial velocity means the object is moving towards the observer. Stationary objects and objects moving perpendicular to the line - of - sight have zero radial velocity.

Answer:

an object moving away from the observer