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In a projectile motion, the velocity vec...

In a projectile motion, the velocity vector of the projectile is

A

always perpendicular to the acceleration

B

never perpendicular to acceleration

C

perpendicular to acceleration two times during its flight

D

perpendicular to acceleration only once during its flight

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CHETANA PUBLICATION-MOTION IN A PLANE-EXERCISE
  1. The two dimensional motion of a body in which a vertical motion with c...

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  2. Whic of the following is NOT an example of a projectile?

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  3. In a projectile motion, the velocity vector of the projectile is

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  4. The trajectory of particle is symmetrical about the perpendicular dra...

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  5. A shell is fired at an angle of 30^@ to the horizontal with velocity 1...

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  6. A projectile can have the same range R for two angles of projection. I...

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  7. When a body is projected vertically up from the ground, its velocity i...

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  8. A body is projected with a vertical velocity of 30 m//s at an angle of...

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  9. The angle between velocity and acceleration of a particles describing ...

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  10. A particles moves with a uniform speed v and time period T in a circul...

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  11. In uniform circular motion, the centripetal acceleration is

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  12. An aeroplane is flying with a uniform speed of 150km / h along the ...

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  13. The ratio of angular speed of a second hand to the hour of a watch is

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  14. What is approximately the centripetal acceleration (in units of accele...

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  15. Two cars of masses m1 and m2 are moving in circles of radii r1 and r2 ...

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  16. A body moves in a circle covers equal distance in equal intervals to t...

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  17. The acceleration of an object moving in a circle of radius R with unif...

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  18. A particle is moving with a constant speed 'v' in a circle what is the...

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  19. The earth moves round the sun in a near circular orbit of radius 1.5 x...

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  20. Which one of the folowing statements is not correct in uniform circula...

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