The graph below plots the position versus time for a certain object moving along the x-axis. What is the average velocity over the following time intervals (in m/s)? (Indicate the direction with the signs of your answers.) x (m) 12 10 2 t (s) 4 -2 -4 -6 -8 (a) o to 2.00 s m/s (b) 0 to 4.00 s m/s (c) 2.00 s to 4.00 s m/s
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