1.

A body of mass 1 kg initially at rest, explodes and breaks into three fragments of masses in the ratio 1:1:3. The two pieces of equal masses fly off perpendicular to each other with a speed of 30 m/s each. What is the velocity of the heavier fragment?

A.  10 m/s
B.  20 m/s
C.  \[10\sqrt{2}\,\,m/s\]  
D.  \[20\sqrt{2}\,\,m/s\]
Answer» D.  \[20\sqrt{2}\,\,m/s\]


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