Question

A particle moving along the circumference of a circle of radius Im completes 3/4 of a circle in 10 second.
What is the average velocity of the partide:

Answer 1

$speed = \frac{ \frac{3}{4} \times 2\pi \: r}{10} \\ = \frac{3 \times 3.14 \times 1}{2 \times 10} \\ = 0.471 \: m {s}^{ - 1}$