Two identical balls collide<span> head on. The </span>initial velocity<span> of </span>one<span> is 0.75 </span>m/s<span> east, while that of the </span>other one<span> is 0.43 </span>m/s west<span>.</span>
Removing an electron from a neutral atom will result in an atom that is positive.
I would have to see the graph.. but by looking at one one online, they are between points D and E.