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A bullet loses ((1)/(n)) ^(th ) of its v...

A bullet loses `((1)/(n)) ^(th )` of its velocity passing through one plank. The number of such planks that are required to stop the bullet can be

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`(n^(2))/(2n-1)`
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VMC MODULES ENGLISH-Motion in Straight Line -PRACTICE EXERCISE
  1. A particle starts from the rest, moves with constant acceleration for ...

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  2. The engine of a train passes an electric pole with a velocity 'u' and ...

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  3. A bullet loses ((1)/(n)) ^(th ) of its velocity passing through one pl...

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  4. A car moving along a straight highway with speed of 126 km h^(-1) is b...

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  5. A car is moving with speed u. Driver of car sees a traffic light. His ...

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  6. If a body starts from rest and travels 120 cm in the 6th second, then ...

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  7. A particle is projected vertically upwards from ground with velocity 1...

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  8. A ball is thrown vertically up from the top of a tower with velocity 1...

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  9. A particle is projected vertically upwards from the top of tower with ...

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  10. A particle is projected vertically upwards from the top of tower with ...

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  11. A particle is projected vertically up from the top of a tower with vel...

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  12. A balloon starts rising from the ground with an acceleration of 1.25 m...

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  13. A balloon starts rising from the ground with a constant acceleration o...

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  14. A particle is dropped from the top of a tower. During its motion it co...

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  15. A particle is dropped from the top of a tower. It covers 40 m in last ...

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  16. A player throws a ball upwards with an initial speed of 29.4" ms"^(–1)...

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  17. A player throws a ball upwards with an initial speed of 29.4 ms^(-1). ...

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  18. A player throws a ball upwards with an initial speed of 29.4" ms"^(–1)...

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  19. A particle is dropped from the top of a tower. Its covered distance in...

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  20. A boy standing on a stationary lift (open from above) throws a ball up...

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