Question

an athelete covers one round of a circular track of radius r in 70 s. The displacement after round is:​

Answer 1

displacement is the shortest distance between the initial and final position

when athlete completes one round it's initial and final position is the same

hence displacement is zero

I hope this helps ( ╹▽╹ )

Answer 2

Answer:

Explanation:

RADIUS OF THE TRACK = R

TIME TAKEN , T = 70 SEC

DISPLACEMENT =?

DISPLACEMENT: SHORTEST DISTANCE BETWEEN THE INITIAL AND FINAL POSITION OF A BODY WHICH HAS UNDERGONE SOME KIND OF MOTION.

HERE BY COMPLETING THE CIRCULAR TRACK THE ATHLETE COMES BACK TO THE SAME STARTING POINT

THAT IS IN THIS CASE BOTH THE FINAL AND INITIAL POSITION OF THE ATHLETE ARE THE SAME

HENCE , DISPLACEMENT = 0 M.

HOPE THIS HELPS.