Question

Draw a labelled vector from which you could calculate the velocity of Jupiter relative to Mars at the time shown.
(No actual calculation required).

See the figure here: https://dl.dropbox.com/u/63664351/Vector.PNG

Answer 1

This is Math - Vector. No calculation is required. Just Vector Drawing.

Answer 2

If I'm not mistaken, what you need to do here is substract Mars' velocity to Jupiter's, a bit like this :

Someone back me up on this?