Can someone please help me with this question thank u​

C option, when two atoms collide and they explode

Explanation:

Because the kinetic energy they have initially for collision will appear as final kinetic energy of the particles of atom after collision. Hence the kinetic energy is conserved so the collision will be elastic.

50 inches should be the resultant vector

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.