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A ball of mass 3 kg is thrown upwards wi...

A ball of mass 3 kg is thrown upwards with velocity 20 m/s. After 1 s it explodes in 2 pieces one of mass 1 kg and other or 2 kg. After explosion both the pices maintain their vertical velocities but on ground they fall 90 m aport
Energy produced (in joule) during explosion is

A

150

B

200

C

300

D

450

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