Question

an athlete one round of a circular track of diameter 200 m in 40 s. what will the distance covered an the displacement at the end of 2 minutes 20 second?

Answer 1

first find the diameter of the circular track means circle then,minus the two terms and you will get your answer

i think this would be the answer

Answer 2

Answer:

length AB=200 m=2 R

time taken to complete one round=40 sec

let the starting point be A

in 140 sec or 2 min 20 sec number of rounds completed=14040=3.5

distance traveled=3.5 * (2*π*R)=3.5*2*π*100 m=2200 m (approx)

displacement refers to change in position from the starting point.the final point is B

as after 3.5 revolutions(starting from A) the athlete will be at B.

displacement=200 m