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A body of mass 1 kg breaks into three frames whose masses are in the ratio 1:1:3 fragments of equal masses move with speed of 30m/s in mutually perpendicular directions . The speed of heavier fragment will be. PLASE TELL ME ANSWER IN FIGURE ALSO

A body of mass 1 kg breaks into three frames whose masses are in the ratio 1:1:3 fragments of equal masses move with speed of 30m/s in mutually perpendicular directions . The speed of heavier fragment will be.
  PLASE TELL ME ANSWER IN FIGURE ALSO

Grade:11

1 Answers

Khimraj
3007 Points
5 years ago
As external force is zero.
apply conservation of momentum
0 = (1/5)*30\hat{i} + (1/5)*30\hat{j} + (3/5)*v
so v = 10\hat{i} + 10\hat{j} = 10\sqrt{2} m/s
Hope it clears...........................

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