Select the incorrect statements from the following

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

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