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An 8 gm bullet is fired horizontally int...

An `8 gm` bullet is fired horizontally into a `9 kg` block of wood and sticks in it. The block which is free to move, has a velocity of `40 cm//s` after impact. The initial velocity of the bullet is

A

`450 m/s`

B

`450 cm/s`

C

`220 m/s`

D

`220 cm.s`

Text Solution

Verified by Experts

The correct Answer is:
`(1)`
`mu = (m + M)v`
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NARAYNA-WORK , ENERGY & POWER -EXERCISE -1 (H.W)
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  2. A body of mass 2 kg attached at one end of light string rotated along ...

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  3. A pilot of mass m can bear a maximum apparent weight 7 times of mg. Th...

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  4. The length of ballistic pendulum is 1 m and mass of its block is 0.98 ...

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  5. A simple pendulum is oscillating with an angular amplitude 60^@. If ma...

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  6. A body is moving in a vertical circle such that the velocities of body...

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  7. A ball of mass 0.6 kg attached to a light inextensible string rotates ...

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  8. Two particles of same mass m moving with velocities u(1) and u(2) coll...

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  9. A ball impinges directly on a similar ball at rest. If 1/4 ^(th) of th...

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  10. n bullets per sec each of mass m moving with velocity v strike normall...

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  11. A heavy nucleus at rest breaks into two fragments which fly off with v...

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  12. A 6 kg mass travelling at 2.5 ms^(-1) collides head on with a stationa...

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  13. A body of mass 10 kg moving with a velocity of 5 ms^(-1) hits a body o...

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  14. A block of mass 1 kg moving with a speed of 4 ms^(-1), collides with a...

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  15. A marble going at a speed of 2 ms^(-1) hits another marble of equal m...

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  16. A massive ball moving with speed v collieds with a tiny ball which is ...

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  17. A 1 kg ball moving at 12 m//s collides head on with a 2g ball moving i...

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  18. A 6 kg mass collides with a body at rest. After the collision, they tr...

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  19. A body of mass m moving at a constant velocity v hits another body of ...

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  20. An 8 gm bullet is fired horizontally into a 9 kg block of wood and sti...

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