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Two paper screens A and B are separated ...

Two paper screens `A` and `B` are separated by a distance of `100m`. A bullet pierces `A` and `B`. The hole in `B` is `10 cm` below the hole in `A`. If the bullet is travelling horizontally at the time of hitting the screen `A`, calculate the velocity of the bullet when it hits the screen `A`. Neglect resistance of paper and air.

Text Solution

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The situation is shown

`d=usqrt((2(h_(1)-h_(2)))/(g)) rArr 100=usqrt((2xx0.1)/(9.8)) rArr u=700m//s`.
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