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Standard XII

Physics

COM in Collision and Explosion

A bullet of m...

Question

A bullet of mass 50g enters a block of thickness t witg speed of 500 m/s.It emerges with 4% of its initial kinetic energy.The emergent speed i

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Similar questions

Q. In a ballistic demonstration, a police officer fires a bullet of mass

50

g with speed of

200 m s^{- 1}

on soft plywood of thickness

2

cm. The bullet emerges with only

10

% of its initial kinetic energy. What is the emergent speed of the bullet?

Q. In a ballistics demonstration, a police officer fires a bullet of mass

50.0 g

with speed

200 m s^{- 1}

on soft plywood of thickness

2.00 c m

. The bullet emerges with only

10 %

of its initial kinetic energy. What is the emergent speed of the bullet.

Q. A police man fires a bullet of mass

25 g r a m s

with speed of

100 m / s

in wooden piece of thickness

2.0 c m

. The bullet leaves the wooden piece with only

10 %

of its initial kinetic energy. By how much percentage has the speed of bullet been reduced?

A bullet of mass 20 g moving horizontally at a speed of 300 m/s is fired into a wooden block of mass 500 g suspended by a long string.The bullet crosses the block and emerges on the other side.If the centre of mass of the block rises through a height of 20.0 cm,find the speed of the bullet as it emerges from the block.

Q. A bullet fired horizontally with a speed of

400 m / s e c

. It strikes a wooden block of mass

2 k g

hanging vertically with the help of long string. After striking with bullet, block rises a height of

20 c m

. If speed with which bullet emerges out from block is

10 λ

then find

λ

. Mass of bullet is

20 g m

. (take

g = 10 m / s^{2}

)

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