Question

A boy is running around a circular track of radius 7 m,then the displacement and distance travelled by boy after 2 and half revolution are respectively​

Answer 1

Answer:

displacement will be the diameter of the circular track

because , displacement is the shortest distance between intial position and final position

therefore ,

displacement = 2r

displacement = 2(7)= 14m

distance = 2.5 x circumference of circular track

distance = 2.5 x 2πr

= 2.5 x 2 x 22/7 x7

= 5 x 22

distance = 110m