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Review Conceptual Example 6 as background for this problem. A car is traveling to the left, which is the negative direction. The direction of travel remains the same throughout this problem. The car's initial speed is 38.6 m/s, and during a 6.00-second interval, it changes to a final speed of (a)54.2 m/s and (b)34.6 m/s. In each case, find the acceleration (magnitude and algebraic sign).The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.3 5. Initial velocity vo Acceleration a (a) + 13m/s + 3.4m/s2 (b) + 11m/s -2.8m/s? (c) 1 1m/s + 2.6m/s- (d) -11m/s -3.4m/s2An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 11.0 m/s in 3.00 s. (a) What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.40 s has elapsed