Question

An athlete starts running along a circular track of radius 7m. Find the distance covered and his displacement after
(a) ¼ revolution

Answer 1

first find out the circumference of a circular track with the help of formula if circumference of a circle is equal to
$2\pi \times r$
where r is

the radius of the circular track which is 7m then to find the distance of the one fourth of its resolution multiply the circumference of the circle track with 1/4 therefore you will get the distance covered by the athlete
to find displacement you can draw a straight line from the origin to the point where he stopped after completing the 14 resolution of the circular track