[HRW7 9.P.093.] A body is traveling at3.0 m/s alon...

[HRW7 9.P.093.] A body is traveling at3.0 m/s along the positive directionof an x axis; no net force acts on the body. An internalexplosion separates the body into two parts, each of mass3 kg, and increases the total kineticenergy by 27 J. The forward partcontinues to move in the original direction of motion.
(a) What is the speed of the rear part?
m/s
(b) What is the speed of the forward part?
m/s

Answers ( 1 )

  1. shaina pijnappel
    shaina pijnappel
    let the velocity of the forward part be V
    let the velocity of the backward part be v
    by linear momentum conservation
    6(3)=3(V)+3(v)
    V+v=6 V=6-v
    final k.e.=.5(6)3*3+27=54
    .5*3*{(V*V)+(v*v)}=54
    V=6
    v=0

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