A body of mass 5 kg explodes into 3 fragments having masses in the ratio of 2:2 : 1. The fragments with equal masses fly in merely far direction with speed 15 `ms^(-1)`. What will be the velocity of lighter one ?

Options

A. `15 ms^(-1)`
B. `15sqrt2 ms^(-1)`
C. `30 ms^(-1)`
D. `30sqrt2 ms^(-1)`

Answer

d

Explanation

Here `1 xx upsilon=[(2xx15)^(2) + (2 xx 15)^(2)]^(1//2)`
`upsilon=sqrt(30)^(2) +(30)^(2) = 30sqrt2 ms^(-1)`
(d) is the choice.