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A graph of v(t) is shown for a world-class track sprinter in a 100 m race.

Time(s) Velocity(m/s)
0 0
2 6
4 12
6 12
8 12
10 12

Part (a) What is his average acceleration between 0.0 and 4.0 s, in meters per square second?

834_velocity.png

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