Answer Happy

Can someone help me with this? I somewhat understand, but get
confused with the v vs. a parts.
For the graphs below, answer the questions that follow. Assume all are parabolas. X x x х х E Ait t A Which of thể graphs above has have zéro velocity for at least one instant? Why or why it? zero acceleration for at least one instant? Why or why not? show velocity that is always decreasing (in magnitude)? show the particle moving in the negative direction at least part of the time? show the particle with positive acceleration? show a velocity that is increasing first and then decreasing? The figure to the right shows a velocity versus time graph for an object. Identify the segment (or segments) where the object is: a. Moving the fastest? (m/s) e. Slowing Down? 3 A 2 b. Moving to the left? f. Turning around? 1 B F 0 T(S) - 2 3 4 5 6 7 8 19 10 N -1 2 E -2 D -3- c. Moving to the right? g. Standing still? d. Speeding up?