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A ball is projected obliquely with a vel...

A ball is projected obliquely with a velocity 49 `ms^(-1)` strikes the ground at a distance of 245 m from the point of projection. It remained in air for

A

10 sec

B

`5 sqrt(2)` sec

C

3 sec

D

`2.5` sec

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. A body is projected at angle 30° to horizontal with a velocity 50 ms^(...

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  16. A body is projected at angle 30° to horizontal on a planet with a velo...

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  17. A body is projected at angle 30° to horizontal on a planet with a velo...

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  18. Abody is thrown with velocity (4i +3j) metre per second. Its maximum h...

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

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  20. The potential energy of a projectile at its maximum height is equal to...

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