A train moves slowly along a straight portion of track according to the graph of position vs time. Find the average velocity during the first 4.00 s of motion , the average velocity for the total trip, the average velocity during the next 4.00 s of motion and the instantaneous velocity at t= 9.00 s. The graph of position vs time is at the image below.

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –