Question

A particle describes a circle of a radios r.what are the displacement and distance when the particle describes (a)90 degree (b)180 degree (c)360 degree

Answer 1

(a) After moving 90°,

Distance = 2πr/4 = πr/2

Displacement = AB = √(r²+r²) = √2r

(b) After moving 180°,

Distance = AC = 2r

Displacement = AC = 2r

(c) After moving 360°,

Distance = 2πr

Displacement = 0