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In a projectile motion the velocity...

In a projectile motion the velocity

A

is perpendicular to the acceleration at one instant only.

B

is never perpendicular to acceleration .

C

is always perpendicular to acceleration .

D

is always at an angle less than `90^(@)` with the acceleratio

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Verified by Experts

The correct Answer is:
A
(a): Only at the highest point of trajectory, velocity is perpendicular to be acceleration . Hence option (a) is correct
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MODERN PUBLICATION-MOTION IN A PLANE -COMPETITION FILE OBJECTIVE TYPE QUESTIONS (A. Multiple Choice Questions)
  1. The resultant of vecA and vecB makes an angle alpha with vecA and vec ...

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  2. Two vectors vec A and vecB are joined with their tails at the same po...

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  3. A particle is projected with a speed u at an angle theta with the hor...

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  4. In a projectile motion the velocity

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  5. Two particles are projected simultaneously from a point with differen...

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  6. Two particle A and B are projectied from the same point at angles 37^(...

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  7. A trolley is moving with velocity v(1) in the horizontal direction . A...

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  8. Two objects A and B are horizontal at angles 45^(@) and 60^(@) respect...

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  9. Two particles A and B are projected simultaneously in horizontal direc...

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  10. An object is projected with speed u and range of the projectile is fou...

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  11. An object is projected with speed u and range of the projectile is fou...

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  12. The vertical height of the projectile at the time is given by y=4t-t^(...

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  13. A particle is projected from the ground . Point of projection is taken...

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  14. A particle is moving in a circular path of radius r with constant spe...

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  15. A particle starts from the origin of co-ordinates at time t=0 and move...

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  16. Two particles are projected obliquely from ground with same speed such...

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  17. Particle is projected from the ground at a certain angle with horizont...

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  18. Several bullets are fired from a particular gun in various possible di...

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  19. A particle P is moving with uniform speed in a circular path . C is th...

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  20. A particle is projected at an angle theta with the horizontal . If ang...

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