Question

A boy is moving along a circular path of radius R. What is the distance and displacement of the boy when he completes half a revolution.


a) 2πr , 2π
b) 2πr, r/2
c) πr, r
d) πr,2r​

Answer 1

Answer:

d

Step-by-step explanation:

when boy completes half circle

the circumference of the circle is 2πr

as its half revolution so its distance becomes πr

and the displacement is the shortest distance that is through diameter so the displacement is 2r