posted by Cory .
Two 3.0g bullets are fired with speeds of 40.0 m/s and 80.0 m/s respectively. What are their kinetic energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies?
I got 60 for the first bullet and 120 for the second. I am not sure I used the formula correctly and I do not know how to obtain the "ratio" for kinetic energies. I would appreciate any help.