A body of mass M at rest explodes into t...

A body of mass M at rest explodes into three masses, two of which of mass `M//4` each, are thrown off in perpendicular directions with velocity of `3 m s^(-1)` and `4 m s^(-1)` respectively. The third piece will be thrown off with a velocity of :

`3.0 m s^(-1)`

`2.5 m s^(-1)`

`2.0 m s^(-1)`

`1.5 m s^(-1)`

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