calculus is studied. Practice 1. This graph describes the motion of an object moving in a v (m/s] straight line. At the beginning it is going east. From the graph 80 determine each of the following. (a) the object's displacement in the first 3.0 s 60 (b) the object's displacement between t = 3.0 s and t = 5.0 s 40 (c) the total displacement of the object in 14 s (d) the average velocity of the object from t = 0 to t = 8.0 s 20 (e) the d-t graph; use it to check your answers to parts (a) to 0 (d) -(200 m [E], 0, 0, 17.5 m/s [E]) 2 4 6 8 10 12 14 + (5) -20 2. Use this graph of the motion of a car to find the total displace- ment (north is positive). (150 m [N] ) - 40 -60- v (m/s] - 80- 120 90 60 30 t (s) 5 10 15 20 25 - 30 -60