Objects A and B are at the origin. If object A moves to #(5 ,-1 )# and object B moves to #(-8 ,1 )# over #3 s#, what is the relative velocity of object B from the perspective of object A? Assume that all units are denominated in meters.
Treating the positive X-axis as North,
The distance between points A and B has increased from
for an average speed of
Relative to A, B has moved
(Remember that velocity must always include a direction as well as a speed).