Question

An athlete moves 150m in 2minutes and next 50m in 20s on the same straight path. What is his average speed and average velocity?

Answer 1

av speed=total distance
                 total time
              =150+50
                 120+20
              =200
                140
              =1.42

average velocity=displacement
                              time
                         =150-50
                           140
                         =100
                           140
                         =.7312

Answer 2

6.75 km/h is the average speed of athelete