Physics, 07.04.2020 17:00, briannabarreraswestb

The nucleus of the polonium isotope 214 Po (mass 214 u) is radioactive and decays by emitting an alpha particle (a helium nucleus with mass 4 u). Laboratory experiments measure the speed of the alpha particle to be 1.97×107 m/s.

Assuming the polonium nucleus was initially at rest, what is the recoil speed of the nucleus that remains after the decay?

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The nucleus of the polonium isotope 214 Po (mass 214 u) is radioactive and decays by emitting an alp...