An explosion blows a rock into three parts. The fragments of masses 1 kg and 2 kg move perpendicular to each other with velocities 
and 
, respectively. If the third fragment moves with a velocity of 
, then the mass of the third fragment is
Text Solution
Verified by ExpertsThe correct answer is:
A
Apply the law of conservation of linear momentum.
Momentum of the first part 
Momentum of the second part 
Resultant momentum 
The third part should also have the same momentum
Let the mass of the third part be M, then
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