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In the above problem the displacement af...

In the above problem the displacement after 2 s is:

A

`30sqrt(3) hati+30 hatj`

B

`60sqrt(3) hati+40 hatj`

C

`10 sqrt(3) hati+10 hatj`

D

`40 sqrt(3) hatj+40 hati`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-MOTION IN A PLANE-EXERCISE-2 (Oblique project
  1. A body is projected with a velocity 60 ms ^(-1) at 30^(@) to horizont...

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  2. A body is projected with velocity 60m/sec at 30 degree horizontal, its...

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  3. In the above problem the displacement after 2 s is:

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  4. A body is projected down from height of 60 m with a velocity 10 ms ^(-...

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  5. A body is projected with velocity u such that its horizontal range and...

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  6. A stone is projected from the ground with a velocity of 14 ms ^(-1). O...

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  7. The height y and horizontal distance x covered by a projectile in a ti...

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  8. A body is projected at an angle of 30^@ with the horizontal and with a...

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  9. A ball is projected obliquely with a velocity 49 ms^(-1) strikes the ...

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  10. The potential energy of a projectile at maximum height is 3/4 times ki...

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  11. Two bodies are thrown from the same point with the same velocity of 50...

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  12. A gun fires a bullet at a speed of 140 ms^(-1). If the bullet is to hi...

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  13. A body is projected with velocity 24 ms^(-1) making an angle 30° with...

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  14. A particle is thrown with velocity u at an angle prop from the horizon...

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  15. The equation of trajectory of a projectile is y=10x-(5/9)x^(2). If we ...

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  16. An object is projected with a velocity of 20ms^(-1) making an angle of...

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  17. For a projectile, the ratio of maximum height reached to the square of...

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  18. The speed of a projectile at its maximum height is sqrt(3) //2 times i...

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  19. The velocity at the maximum height of a projectile is half of its init...

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  20. A person throws a bottle into a dustbin at the same height as he is 2m...

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