!!!!! HELP DUE IN 2 MIN !!!
 A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). The line runs in 3 straight segments from 0 seconds 0 meters to 4 seconds 12 meters to 6 seconds 12 meters to 12 seconds 0 meters.
 Use the graph to determine the instantaneous speed at 2 seconds.
 m/s
 What is the average speed over the entire trip?
 m/s