Computing Average Speed The figure below shows the path of person consisting of a straight line of length R, a small semicircle of radius R and a larger semicircle. The dashed line in the figure is there just as a guide. The path of the person The person walks with a constant speed of v1 2 m/s along the straight line, then with a constant speed of v2 4 m/s along the smaller semicircle and then with a constant speed of v3 3 m/s along the larger semicircle. Determine the average speed of the person during this round trip