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The description of the movement of bodies by their position, velocity, acceleration (and possibly higher time derivatives, such as, jerk) without concern for the underlying dynamics/forces/causes.

0 votes
2 answers
1k views

Work done my tangential force in non uniform circular motion

Why is the work done by the tangential force in non uniform circular motion considered to be non zero? After one complete revolution the net displacement is 0. According to my understanding if the net …
2 votes
5 answers
2k views

Can the average speed of a moving body be 0? [closed]

My book states that- "Average speed of a moving body can never be 0 except when time approaches infinity" I understand that Average speed = (Total dist./ Total time) and that if time is infinity, ave …
0 votes
3 answers
569 views

Is it possible to have a situation in which velocity of the particle is never 0 but its aver...

My book states that-" It is not possible to have a situation in which speed of the particle is never 0 but the average speed in an interval is 0" I would like to know if the same holds true for veloci …