x - 36 m 4 Adam, Bill, and Chad are in an airport terminal and come across two moving BT walkways that are 36 m long. The walkways move with a constant speed of 3 m/s. The three decide to have a race, but they all run at the same constant speed of 9 m/s --3m/s- relative to the floor. The race is as follows: x =0 At time t = 0, all three start at the same time at x = 0 and immediately reach their constant 9 m/s speed relative to the floor on which they are running. All three must run 36 m to the right, then turn around in a very short time, and run 36 m to the left back to the starting point. Adam runs his race on the non-moving floor. Bill runs his race on the walkway that moves to the right at a constant 3 m/s. Chad runs his race on the walkway that moves to the left at a constant 3 m/s. (a) Fill in each blank: During the first part, Adam's velocity relative to the Earth is choose your answer. V m/s choose your answer. During the second part, Adam's velocity relative to the Earth is choose your answer. m/s choose your answer. During the first part, Bill's velocity relative to the Earth is choose your answer. m/s choose your answer. During the second part, Bill's velocity relative to the Earth is choose your answer. m/s choose your answer.. During the first part, Chad's velocity relative to the Earth is |choose your answer. V m/s choose your answer... During the second part, Chad's velocity relative to the Earth is choose your answer. V m/s choose your