question_answer 1)

An athlete completes one round of a circular track of diameter  200 m in 40 s. What will be the distance covered and the displacement at the end of 2 minutes 20 s?

Answer:

                Diameter                 Time for one round                 Distance travelled in 2 minutes and 20 s.                                               rounds                 Distance travelled = Circumference of the circle                                                 (ii) Displacement after 3.5 revolution                 = diameter of the track                 = 200 m.