Q .     A ball of mass 0.2 kg rests on a vertical post of height 5 m. A bullet of mass 0.01 kg, traveling with a velocity Vm/s in a horizontal direction, hits the centre of the ball. After the collision, the ball and bullet travel independently. The ball hits the ground at a distance of 20 m and the bullet at a distance of 100 m from the foot of the post. The initial velocity V of the bullet is

JEE 2011 ADVANCED Paper - 2
A

`250 m//s`

B

`250\sqrt{2} m//s`

C

`400 m//s`

D

`500 m//s`

HINT

`M\times V_text(ball:final) + m \times V_text(bullet:final)= M\times V_text(boll:initial) + m\times V_text( bullet: initial)`

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