A body of mass 1 Kg initially at rest explodes and breaks into three fragments of masses in the ration 1:1:3 The two pieces of equal mass fly off perpendicular to each other with a speed of 30ms−1 each. What is the velocity of the heavier fragment?
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Solution
Given that,
Mass m=1kg
Velocity v=30m/s
According to law of conservation of linear
momentum
m1v1+m2v2+m3v3=0
30+30+3v3=0
v3=−20m/s2
Hence, the velocity of the
heavier fragment is -20m/s