Question

A person moves on a circular track of radius 25m.What will be the distance and displacement after completing 3 quarters of the circle

Answer 1

Answer:

Total Distance Travel = 3/4th Part of the Circumference of Circle i.e.

3/4*2*Pi*r = 3/4*2*3.14*400 = 1885.7 meter

Displacement means the shortest distance from A to B then

Displacement = Square root of (400^2 +400^2) By using pythagoras theorem h^2 = P^2+b^2

which is equal to 565.68 meter.

hope you have been understood

Answer 2

The radius is 25 m on circular track ok .