Question

A body completes one round of a circle of radius 'R'in 20sec. the displacement of the body after 45 seconds??​

Answer 1

$\huge\mathcal{Answer:}$

Assuming uniform motion after 45seconds

body will have finished

$\frac{45}{20} = 2.25second$

displacement

$ab = \sqrt[]{r {}^{2} } + {r}^{2} = \sqrt{2} r$