Mariwinters873 Mariwinters873 27-12-2023 Physics contestada It takes Usain 8 s to run from x= 0, to x =+ 10 m and then back to x = -80 m. What is his average velocity during that 8-second period? 1) -10 m/s 2) 10 m/s 3) 8 m/s 4) - 8 m/s 5) None of the above