yubo56

Yeah, so the basic center-of-mass-frame argument was set kinetic energies equal to spring energy:

m1v1^2 + m2v2^2 = kx^2



But this also works in any arbitrary frame. Call the two velocities (vcm + v1) and (vcm + v2), corresponding to the center of mass velocity and their relative velocities in the center of mass frame (so that they add up to the total velocity in any arbitrary frame). Then the energy equation looks like:

m1(vcm + v1)^2 + m2(vcm + v2)^2 = kx^2 + (m1 + m2)vcm^2

yubo56

### Interview 1

One flight per weekend of max 6 hrs, schedule of holidays per city per date,
maximize break days
    - Good ability to code, algorithm solid, called out details, moved quickly
      through planning phase, good communication, a bit scattered and lost
      time. Expressed complete solution, solid!

### Interview 2