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A particle is projected vertically upwar...

A particle is projected vertically upwards with a velocity of 20m/sec. Find the time at which distance travelled is twice the displacement

A

`2+ sqrt(4//3) sec `

B

1 sec

C

`2+ sqrt(3//4) sec `

D

3 sec

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A
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AAKASH SERIES-RIVISION EXERCISE-MOTION IN A STRAIGHT LINE (VERTICAL MOTION)
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  2. A projectile moving vertically upwards with a velocity of 200 m/s brea...

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  5. Which graph corresponds to an object moving with a constant negative a...

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  6. A stone is dropped from a hill of height 180m. Two seconds later anoth...

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  7. Water drops fall from the roof of a building 20 m high at regular time...

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  8. A body is dropped from a height of 16 m. The body strikes the ground a...

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  9. The distance travelled by a falling body in the last second of its mot...

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  10. A ball dropped from a point P crosses a point Q in t seconds. The time...

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  11. Two balls are dropped from the same height at two different places A a...

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  12. A lead ball dropped into a lake from a diving board 5m above the water...

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  13. A body P is thrown vertically up with velocity 30 ms^(-1) and anothe...

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  14. A boy sees a ball go up and then down through a window 2.45 m high. If...

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  15. A particle is projected vertically up and another is let fall to meet ...

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  16. A ball is projected from the bottom of a tower and is found to go abov...

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  17. A stone is dropped from a height of 10cm above the top of a window 80 ...

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  18. If a stone dropped from the top of a tower travels half of the height ...

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  19. A body initially at rest is moving with uniform acceleration a. Its ve...

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  20. A parachutist drops freely from an aeroplane for 8s before the parachu...

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