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Momentum: Nucleus decays into 3

  • #1
Can someone please help with this one? I'm not sure what to do here. I broke momentum for particles one and two into components (found m1v1cosθ1 + m2v2cosθ2 and m1v1sinθ1 + m2v2sinθ2) but this is not correct and I really don't know what to do. Please help!!


A certain nucleus at rest suddenly decays into three particles, two of which are charged and can be easily detected. The data gathered for these two particles is:

Particle 1 has mass m1 = 3.00 x 10^-20 kg moving at speed v1 = 5.25 x 10^5 m/s at θ1 = 51.9o.

Particle 2 has mass m2 = 2.11 x 10^-25 kg moving at speed v2 = 1.10 x 10^7 m/s at θ2 = 220o.

Find p3, the momentum of the third piece in i-j notation
 

Answers and Replies

  • #2
Can anyone help? Since it started from rest should the total momentum be 0?
 
  • #3
ehild
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Can anyone help? Since it started from rest should the total momentum be 0?
Yes. Write up the sum of all the x and y components in separate equations and equate them to zero.

ehild
 
  • #4
Thank you!!
 
  • #5
ehild
Homework Helper
15,394
1,802
Thank you!!
You are welcome. Have you got the correct solution?


ehild
 

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