Which of the following exhibits parabolic motion?
a. a stone thrown into a lake
b. a space shuttle orbiting earth
c. a leaf falling from a tree
d. a train moving along a flat track

Which lists correctly orders nuclear reactions from most radioactive waste generated to least waste generated within a given period of time? o a. radioactive decay, nuclear fission, nuclear fusion o b. radioactive decay, nuclear fusion, nuclear fission o c. nuclear fusion, nuclear fission, radioactive decay o d. nuclear fission, nuclear fusion, radioactive decay