 # Pick the correct statement.a) average speed of a particle in a given time is never less than magnitude of average velocity.B) it is possible to have a situation where     |dv/dt| is not equal to zero but d|v|/dt =0C)the average velocity of a particle is zero in a time interval. it is possible that the instantaneous velocity is never zero in that interval.D)the average velocity of a particle moving along a straight line is zero in a time interval. it is possible that the instantaneous velocity is never zero in that interval.

10 years ago

Correct statements r (a),(b),(c)

Validity statement for (a)

The average velocity is displacement /time but average speed is distance/ time. Since distance is always greater than or equal to displacement, it is evident that average speed is either equal to or greater than average velocity

Valdity staement for (b)

Situation b simplay states  that a situation should exist where the magnitutde of acceleration is not equal to 0 but velocity is 0. Such a situation is indeed possible when we accelerate a car frm rest.Initially the car is at rest but it has a positive acceleration

Valdity staement for (c)

When a particle moves in a uniform circular motion, after completing 1 complete revolution its velocity is 0 but throughout the journey its has a certain instantaneous velocity.