Question

A boy completes
a

semicircle of radius 7m in 5 secound. the distance travelled by the boy is and the displacement of the boy is​

Answer 1

circumference of circle cover by boy =distance,. for semicircle distance is 2πr/2,. distance=π×r,. distance=π0.07m and displacement is the shortest distance between final position to initial position means displacement=2r,. displacement=2×0.07 ,. displacement=0.14m