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Pick the correct statements:...

Pick the correct statements:

A

Average speed of a particle in a given time is never less than the magnitude of the average velocity

B

It is possible to have a situation in which `|(doverline(v))/(dt)|ne0` but `(d)/(dt)|overline(v)|=0`

C

The average velocity of a particle is zero in a time interval. It is possible that the instantaneous velocity is never zero in the interval.

D

The average velocity of a particle moving on a straight line is zero in a time interval. It is possible that the instantaneous velocity is never zero in the interval. (Infinite acceleration is not allowed)

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The correct Answer is:
A, B, C
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MOTION-KINEMATICS-EXERCISE 2 OBJECTIVE PROBLEMS (Level-2)
  1. Which of the following statements are true for a moving body?

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  2. The figure shows the velocity (v) of a particle plotted against time (...

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  3. Pick the correct statements:

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  4. If the velocity of the particle is given by v=sqrt(x) and initially pa...

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  5. A particle moves with an initial velocity v(0) and retardation alpha v...

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  6. A projectile of mass 1kg is projected with a velocity of sqrt(20)m//s ...

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  7. Choose the correct alternative (s)

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  8. If T is the total time of flight, h is the maximum height and R is the...

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  9. A particle moves in the xy plane with a constant acceleration 'g' in t...

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  10. A ball is rolled off along the edge of a horizontal table with velocit...

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  11. A particle is projected at an angle theta from ground with speed u (g ...

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  12. A particle is projected vertically upward with velocity u from a point...

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  13. A block is thrown with a velocity of 2m//s^(-1) (relative to ground) o...

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  14. A particle moves with constant speed v along a regular hexagon ABCDEF ...

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  15. A man on a rectilinearly moving cart, facing the direction of motion, ...

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  16. Two swimmers A and B start swimming from different positions on the sa...

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  17. A man who can swim at a speed v relative to the water wants to cross a...

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  18. A projectile is projected with a speed of 40m/s at a angle theta with ...

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  19. Path of three projectiles are shown. If T(1),T(2) and T(3) are time o...

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  20. From an inclined palne two particles P,Q are projected with same speed...

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