(Solved): A hydrogen atom 1H with 120eV of kinetic energy has a head-on, perfectly elastic collision with a ...

A hydrogen atom $${}^1\mathrm{H}$$ with $$120\mathrm{eV}$$ of kinetic energy has a head-on, perfectly elastic collision with a $${}^{12}\mathrm{C}$$ atom at rest. Part A Afterward, what is the kinetic energy, in $$\mathrm{eV}$$, of $${}^1\mathrm{H}$$ ? Express your answer in electron volts. Part B Afterward, what is the kinetic energy, in $$\mathrm{eV}$$, of $${}^{12}\mathrm{C}$$ ? Express your answer in electron volts. $$x$$ Incorrect; Try Again; 4 attempts remaining Review your calculations and make sure you round to 3 significant figures in the last step.