Question

An athlete completes half a round of a circular track of radius R, then the displacement and distance
covered by the athelete are
A) 2R and TER
B) TR and 2R C) R and 21 R D) 27 R and R
​

Answer 1

Answer:

Circle's circumference is 2×pi×R

for half of a circle ,

the distance is pi×R

and

displacement is 2R

so the answer is

option A) 2R and pi×R