A stationary body of mass explodes into three fragments having mass in the ratio 3:3:1 its two fractions having equal mass moving at right angles to each other with a velocity of 15m/s what is the velocity of the third body ?
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Use Conservation of Linear Momentum,
m1v1^+m2v2^+m3v3^=0
3/7m(15i)+3/7m(15j)+1/7mv3^=0
Then you solve it you get answer
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