A box slides across a frictionless horizontal surface with constant acceleration 3.40 m/s2 and over a time interval reaches a final velocity of 13.0 m/s.

a. If its initial velocity is 6.50 m/s, what is its displacement (in m) during the time interval?

b. What is the distance it travels during this interval?

c. If its initial velocity is -6.00 m/s what is its displacement during the time interval?

d. What is the total distance it travels during the interval in part (c)?