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A gun fires a bullet at a speed of 140 m...

A gun fires a bullet at a speed of `140 ms^(-1)`. If the bullet is to hit a target at the same level as the gun and at 1km distance, the angle of projection may be

A

`60^(@)` or `30^(@)`

B

`40^(@)` or `50^(@)`

C

`15^(@)` or `75^(@)`

D

`20^(@)` or `70^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MOTION IN A PLANE -Exercise -II
  1. The potential energy of a projectile at maximum height is 3/4 times k...

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

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

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  4. A body is projected with velocity 24 ms^(-1) making an angle 30^(@) wi...

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  5. A particle is thrown with a velocity u at an angle theta from the hori...

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  6. The equation of trajectory of a projectile is y = 10 x - ((5)/(9)) x^(...

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  7. The equations of motion of a projectile are given by x = 36 metre and ...

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

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

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  10. The speed of a projectile at its maximum height is (3sqrt(3))/(2) time...

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

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

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  13. A body is projected at angle 30^(@) to horizontal with a velocity 50 m...

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  14. In the above problem range of body is m. [g = 10 ms^(-2)]

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  15. A ball is thrown with velocity 8 ms^(-1) making an angle 60^(@) with t...

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  16. A body is projected at angle 30^(@) to horizontal on a planet with a v...

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  17. A body is thrown with velocity (4i + 3j) metre per seocnd. Its maximum...

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  18. Two particles are projected with same velocity but at angles of projec...

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  19. The potential energy of projectile of a projectile at its maximum heig...

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  20. If the maximum vertical height and horizontal ranges of a projectile a...

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