Question

hi Bob of mass 1 kg initially at rest explodes and breaks into three fragments of masses in the ratio 1 is to 1 is to 3 the two pieces of equal mass fly of perpendicular to each other with a speed of 15 M per second is the speed of heavier fragment is what?​

Answer 1

3:1:1

so 3x+1x+1x= 1 kg

              5x =  1kg  => x=0.200kg

by law of conservation of momentum ,

Mv=m1v1+m2v2 .......

1kg*0m/s=  2(0.200*15 ) + 0.600*y

0.6*y = 6

y=10

∴ speed is 10 m/s