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Average Speed

Which of the ...

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Which of the following is incorrect? 1)Magnitude of instantaneous velocity is equal to instantaneous speed. 2) Distance is always greater than or equal to displacement 3) Distance covered can never decrease with time. 4) Speed can never decrease with time

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Q. When a particle moves with variable velocity, which of the following relations are false?
(I) Average speed = average velocity
(II) Instantaneous speed = instantaneous velocity
(III) Distance covered = magnitude of displacement

Q. Assertion :Distance covered by a moving body is always greater than zero. Reason: Displacement of a particle can be greater than or less than or equal to zero.

Q. Assertion :In case of oscillatory motion the average speed for any time interval is always greater than or equal to its average velocity. Reason: Distance travelled by a particle cannot be less than its displacement.

Q. For instantaneous speed, the distance traveled by the object and the time taken are both equal to zero.

The displacement is always greater than or equal to distance.

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