4. (a) (A) Give the energy transformation equation for one complete ball bounce. [2] (b) (A) Explain how you could determine the efficiency with which the mechanical energy of a ball bounce is conserved. [3] PART B: Problems 1. (T) A receiver on a football team runs 8.0 m [E] and then turns abruptly to run 12.0 m [W]. If the entire motion takes 5.0 s, determine the receiver's: (a total distance travelled. [2] (b) total displacement. [2] (b) average speed. [2] (c) average velocity. [2]