Kinetic Energy Calculation for Alpha Particle Emission in Nuclear Reaction

[Elvis]

Can Anyone help me, please!

An automatic nucleus initially moving at 500 m/s emits an alpha particle in the direction of its velocity, and the new nucleus shows to 450 m/s. If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, what speed does the alpha particle have when it is emmited ?

 

[Dick]

Could conservation of momentum help you? Try it.