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Two paper screens A and B are separated by a distance of 100m. A bullet pierces A and then B. the hole in B is 10 cm below the hole in A. if the bullet is travelling horizontally at the time of hitting A, then the velocity of the bullet at A is

Text Solution

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The situation is shown in fig.
`d=u sqrt((2(h_(1)-h_(2)))/g)`
`100 = usqrt((2 xx 0.1)/9.8)`
`u= 700 m//s`
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