Using the sliders, kadia sets the initial velocity of ball 1 to +20 m/s, and the initial velocity of ball 2 to −20 m/s. she sets the masses of both balls equal to 1 kg. because this is a perfectly inelastic collision, the balls will stick together after colliding. she clicks "start" to begin the simulation. what can she say about what she observed? "the two balls collided and moved together to the left." "the two balls collided and stopped." "the two balls moved in opposite directions." "the two balls collided and moved together to the right."

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

You can find results and justify them? you can test your hypothesis