Question
Figure 2.81 Graph showing Velocity vs. Time of a cart. A cart is constrained to move along a straight line. A varying net force along the direction of motion is exerted on the cart. The cart's velocity v as a function of time t is shown in the graph. The five labeled points divide the graph into four sections. Which of the following correctly ranks the magnitude of the average acceleration of the cart during the four sections of the graph?
1. $a_{CD} > a_{AB} > a_{BC} > a_{DE}$
2. $a_{BC} > a_{AB} > a_{CD} > a_{DE}$
3. $a_{AB} > a_{BC} > a_{DE} > a_{CD}$
4. $a_{CD} > a_{AB} > a_{DE} > a_{BC}$
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