Question 3: Use the v-t diagram for an object to answer the following questions. velocity (m/s) A B 20 0 15 18 20 23 27 time ( s ) C A. State the time interval when the motion is uniform? (K:2) B. What is the average acceleration at t=18 s? (A:1) C. What is the total displacement for the first 18 seconds? (A:2) D. Sketch the a-t diagram approximately. (C:2) E. If another object, started from rest and is accelerating with an acceleration of 2.0 m/s2, when will the two objects meet? (if they do). (1:3)