A big particle of mass (3 + m) kg blasts into 3 pieces, such that a particle of mass 1 kg moves along x-axis, with velocity 2 m/s and a particle of mass 2 kg moves with velocity 1 m/s perpendicular to direction of 1 kg particle. If the third particle moves with velocity 
m/s, then m is:
A
2 kg
B
1 kg
C
2 
kg
kg
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
A
Conservation of linear momentum
0 = (1 × 2 
) + (2 ×1 
) + m 
m 
= – 2 
– 2 
mv = 2 
m ( 
) = 2 
m = 2 kg
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