S1 : Average velocity is path length divided by time interval
S2 : In general, speed is greater than the magnitude of the velocity
S3 : A particle moving in a given direction with a non-zero velocity can have zero speed
S4 : The magnitude of average velocity is the average speed
(a) S2 and S3
(b) S1 and S4
(c) S1, S3 and S4
(d) All four statements
Answer : The Right option is (c)
Solution :
Average velocity = Total Displacement / Total Time
A particle moving in a given direction with non-zero velocity cannot have zero speed. In general, average speed is not equal to magnitude of average velocity. However, it can be so if the motion is along a straight line without change in direction