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A particle of rest mass 1.10 MeV/c2 and kinetic energy 2.10 MeV collides with a stationary particle of rest mass 2.80 MeV/c2. After the collision, the particles stick together.
1) Find the speed of the first particle before the collision.
2) Find the total energy of the first particle before the collision in MeV.
3) Find the initial total momentum of the system in MeV/c.
4) Find the total kinetic energy after the collision in MeV
5) Find the rest mass of the system after the collision, in MeV/c2
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