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3. Some students used two straight segments and two half circles to make a track for a toy car. shown in the scale diagram at right. A Each box on the diagram is 5 cm on a side. The car moves clockwise around the track at constant speed. It takes the car 8 s to go around the track once. B 1 ho = 5 c a. Determine the speed of the car. Show your work. x m b. Consider the interval that begins when the car passes point A and ends when the car passes point B (halfway around the track). i. On the diagram at right. draw an arrow to represent the direction of Direction of 17": the average velocity over this interval. Explain your reasoning. fromA to E ii. Determine the magnitude of the average velocity of the car over this interval. Show your work. iii. On the diagram at right, draw an arrow to represent the direction of Direction of 5\"\" the average acceleration over this interval. Explain your reasoning. from A to 3 iv. Determine the magnitude of the average acceleration of the car over this interval. Show your work