Question

a particular moves over three quarters of a circle of radius "r"cm. calculate magnitude of distance and displacement of the partical

Answer 1

Distance = 3/4th of circumference
= (3/4) × 2 πr
= 1.5πr cm
= 4.71r cm

Displacement = √(r^2 + r^2)
= r√2 cm
= 1.414r cm