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A particle is projected up the inclined ...

A particle is projected up the inclined such that its component of velocity along the incline is `10 m//s`. Time of flight is `2` sec and maximum height above the incline is `5m`. Then velocity of projection will be

A

10 m/s

B

`10 sqrt2 m//s`

C

`5 sqrt5 m//s`

D

none of these

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The correct Answer is:
B
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ALLEN -KINEMATICS-2D-Exercise (O-1)
  1. A particle P is projected from a point on the surface of smooth inclin...

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  2. If time taken by the projectile to reach Q is T, than PQ =

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  3. A particle is projected up the inclined such that its component of vel...

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  4. A particle A is projected with speed v(A) from a point making an angle...

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  5. Consider the motion of three bodies as shown for an observer on B. wha...

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  6. A trolley is moving horizontally with a constant velocty of v m//s w.e...

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  7. An elevator car (lift) is moving upward with uniform acceleration of 2...

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  8. A flag is mounted on a car moving due North with velocity of 20 km//hr...

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  9. Three ships A, B and C are in motion. The motion of A as seen by B is ...

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  10. Wind is blowing in the north direction at speed of 2 m/s which causes ...

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  11. A boat which has a speed of 5km per hour in still water crosses a rive...

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  12. A man is crossing a river flowing with velocity of 5m//s. He reaches a...

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  13. A motor boat is to reach at a point 30^@ upstream on the outer side of...

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  14. A ball is thrown from the top of 36m high tower with velocity 5m//ss a...

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  15. A particle moves in the xy plane and at time t is at the point vec r= ...

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  16. A particle moves in the xy plane with a constant acceleration 'g' in t...

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  17. Two particle A and B projected along different directions from the sam...

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  18. Positions of two vechicles A and B with reference to origin O and thei...

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  19. Two projectiles are thrown simultaneously in the same plane from the s...

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  20. Two projectiles are thrown simultaneously in the same plane from the s...

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