A small child’s leg when she walks can be modeled as uniform circular motion. Assume that each hip moves in a circular arc equal to the length of the leg, with the weight-bearing foot at the center of the circle and the child’s entire mass concentrated near the hip. Calculate the maximum speed vmax at which she can walk if her weight is 20 kg and the length of her leg is 30 cm. A. 1.52 m/s
B. 1.71 m/s
C. 2.94 m/s
D. 3.00 m/s