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

average speed = total distance / total time here total distance is 150+50 m = 200 m total time = 120sec(2min)+20 sec=140 sec av speed = 200/140= 10/7=1.42m/s av velocity is also same since its a straight line path.for straight line av speed n av velocity are the same thing.

Answer 2

average speed = total distance / total time here total distance is 150+50 m = 200 m total time = 120sec(2min)+20 sec=140 sec av speed = 200/140= 10/7=1.42m/s av velocity is also same since its a straight line path.for straight line av speed n av velocity is the same