Question

John Johnson set a world record for the "100.0" m run with a time of 9.86 s. If, after crossing the finish line, John walked directly back to his starting point in 90.9 s, what is the magnitude of his average velocity for the 200.0m?

Answer 1

I answered this already. http://www.jiskha.com/display.cgi?id=1331526813