Help with 1,2

Use the following information to answer the next The graph shows the change in position of an object over an 8.0 s period. Position of an Object over Time 160 140 120 100 position (m) 80 60 20 Time (seconds) 1. According to the graph, the object is moving slowest during which one of the following time intervals? A) O s to 1 s B) 2 s to 3 s C) 4 s to 5 s D) 6 s to 7 s 2. A car travels on a straight country highway for 5.0 km at 100 km/h, then through a more populated area for another 5.0 km at 60 km/h. The average velocity of the car is A) 80 km/h B) 75 km/h C) 3.1 x 102 km/h Pot D) 64 km/h