A person reaches a maximum height of 65 cm when jumping straight up from a crouched position. During the jump itself, the person's body from the knees up rises a distance of around 41 cm. To keep the calculations simple and yet get a reasonable result, assume that the entire body rises this much during the jump. A) With what initial speed does the person leave the ground to reach a height of 60 cm?B) In terms of this jumper's weight W , what force does the ground exert on him or her during the jump?