Question

A man runs east 9.8 m/s for 11 s, stops for 6.9 s, then runs back (west) at 1.5 m/s for 1.2 s. What is the man's average velocity?

Answer 1

velocity=displacement/time
displacement=9.8*11E-1.58*1.2E
time=11+6.9+1.2