Question

body travels along a circular path of radius 20 metre after travelling a half a revolution in 20 seconds find the average speed​

Answer 1

Answer:

Explanation:

Average speed = $\frac{distance  travelled}{Total time}$

                          =$\frac{\pi r}{t}$

                          =$\frac{22* 20}{7*20}$

                         =3.14 m/s

Answer 2

Answer:

Explanation:

Average Speed = distance/time

distance=(1/2)*circumference [ here we're using 1/2 because it only travels half of the revolution]

circumference=2*π*r=2*(22/7)*.6=3.771m

distance=(1/2)*3.771=1.886m

Average speed=1.886/20=0.0943m/s