# Uranium Fragments#

A radioactive $$^{238}\mathrm{U}$$ uranium nucleus is initially at rest. It spontaneously disintegrates into a small fragment that is ejected with a measured speed of 1.9$$\times 10^7 \ m/s$$ and a daughter nucleus that recoils with a measured speed of 2.14$$\times 10^5 \ m/s$$. The mass of the original uranium nucleus is $$^{238}\mathrm{U}$$ amu (atomic mass units).

## Part 1#

What is the mass of the ejected fragment?

Please enter in a numeric value in amu.

## Part 2#

What is the mass of the daughter nucleus?