Take the ratio of relativistic rest energy, E = mc2 , to relativistic momentum, p = mu , and show that in the limit that mass approaches zero, you find E / p = c .

Thursday, September 1, 2016 7 Ideas 2nd lecture 3 “Ingredients" of the Universe : -Space -separates objects -Time - separates events -Matter (Mass) - occupies space Space:- *Our universe has 3 dimensions of space:- -Length -Width -Height *Degrees of freedom (Dimension) ___________________