Question : An athlete completes one round of a circular track of radius 𝑅 in 40 𝑠𝑒𝑐. What will be his displacement at the end of 2 min. 20 𝑠𝑒c
(A) 0
(B) 2R
(C) 2\pi R
(D) 7\pi R
Answer : option (B)
Solution :
An athlete completes one round of a circular track of radius 𝑅 in 40 𝑠𝑒𝑐. What will be his displacement at the end of 2 min. 20 𝑠𝑒c
with
no comment