Question

A boy is moving in a circular track of radius r.
with uniform speed and completes one revolution
int see. Calculate the distance and displacement
in (i) t /4 sec (ii) t /2sec (iii) 3t /4 sec.​

Answer 1

Answer:

Distance is 2πr and Displacement (i) πr/2 (ii) πr (iii) 3πr/2

Explanation:

On revolution on the circilar track whose perimeter is 2πr.

so thr distance is 2πr.

displacement in t sec = 2πr

displacement in 1 sec = 2πr/t

displacement in t/4 sec = 2πr/ *t/4 = πr/2

displacement in t/2 sec = 2πr/t *t/2 = πr

displacement in 3t/4 sec = 2πr/t *3t/4 =3πr/2

**you can put 22/7 in the place of π and get the final answer.***