Question : A particle moves along a semicircle of radius 10m in 5 seconds. The average velocity of the particle is
(a) 2π m/s
(b) 4π m/s
(c) 2 m/s
(d) 4 m/s
Answer : The Right option is (d)
Solution :
Average velocity = Total Displacement / Total time
Total displacement is equal to diameter of the circle. Which is 20m
therefore, Average velocity = 20 / 5 = 4 m/s