Radon gas, is formed by α decay. (a) Write the decay equation. (b) Ignoring the kinetic energy of the daughter nucleus (it’s so massive), estimate the kinetic energy of the α particle produced. (c) Estimate the momentum of the alpha and of the daughter nucleus. (d) Estimate the kinetic energy of the daughter, and show that your approximation in (b) was valid.

Physics 105 Week 2 Notes By Lauren Faris Chapter 2: 1D Kinematics Sig figs are important! They do not all follow the rules with addition/subtraction. It depends on the last digit that makes a big enough difference. Vectors need 2 components: magnitude and direction. Scalars indicate only magnitude. You add 2 vectors by placing them head to tail. With vectors,...