A body of mass 1 kg initially at rest ex...

A body of mass 1 kg initially at rest explodes and breaks into three segments of masses in the ratio `1:1:3`. The two pieces of equal mass fly off perpendicular to each other, with a speed of 15 m/s each. The speed of the heavier fragment is

`5 sqrt 2m//s`

`45 m//s`

`5 m//s`

`15 m//s`

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