Question

8. A body travel on semicircular track of radius 2m in 1 second what is the value of speed and Velocity *

Answer 1

velocity= displacement/time , for semicircle (half circle) displacement is 2R= 4m and time is 1 sec so velocity is 4/1= 4 m/sec , and for speed= distance/time, for semicircle distance is πR =2π , and Time=1 sec then speed is 2πm/sec