In a along distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the line of start . Suppose the length of the track was `200 m`.
(a) What is the total distance to be covered by the athletes ?
(b) What is the displacement of the athletes when they touch the finish line?
( c ) Is the motion of the athletes uniform or non -uniform?
(d) Is the displacement of an athlete and the distance moved by him at the end of the race equal?

Answer

(a) `800 m` , (b) zero ,( c ) non - uniform , (d) No

Explanation

(a) Distance covered ` = 4 xx 200 = 800 m`.
(b) Displacement `= 0 , as athletes finish at the starting line.
( c ) Motion is non - uniform as the direction is changing .
(d), No, displacement and distance covered are not equal.