Question

Please give answer given in the attachment make it fast

Answer 1

Answer:a) Avg speed= 5.495m/s  , average velocity= 0 m/s

b) average speed=7.32 m/s  , average velocity=4.67m/s

Explanation:

a) Average speed =(total distance travelled)/Time taken

here total distance travelled= circumference of circle=2πr=43.96 m

time=8 secs

average speed =5.495 m/s

average velocity= net displacement/ time

here, since particle reaches same position so net displacemet= 0 m

hence, average velocity =0 m/s

b) Distance travelled = half perimeter= Πr=21.98 m

   net displacement= 2r=14 m

Average speed= 21.98/3=7.32 m/s

Average velocity= 4.67 m/s