. EXERCISE 2.2 Figure 2.7b graphs another run of the train. Find (...

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EXERCISE 2.2 Figure 2.7b graphs another run of the train. Find (a) the average velocity from O to (b) the average and instantaneous velocities from O to (c) the approximate instantaneous velocity at 6.0s and (d) the average and instantaneous velocity at =9.0s. (s) © (a) (b) FIGURE 2.7 (a) (Example 2.2)(b) (Exercise 2.2) (37,0° EXERCISE 4.5 T1 T2 T, Ts T3 T, Suppose the traffic light is hung so that the tensions T1 and T2 are both equal to 80.0 N. Find the new angles they make with respect 37.0° 53.0° to the x-axis. (By symmetry, these angles will be the same.) (a) T3 (c) Answer Both angles are 38.7 (b) 39

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