posted by christian .
Which bear has the greater average velocity over the entire period? Which bear has the greater velocity at t = 8.0 min? Is the velocity of bear A always positive? Is the velocity of bear B ever negative?
Since you have provided us with no information on the two bears' motion, it is impossible for us to answer the question.
You might be expected to answer the question on the basis of some graph that you have and we don't.