Section 2.4 Activlg; 1. In the theory of relativity, the mass of a particle with velocity v is given by m = % where m0 is the 1 v f c mass of the particle at rest and c is the speed of light (which is 299,792,458 meters per second). Explain the meaning of ling (m) and what happens. v)(' 2. Find each limit using algebraic techniques andi'or sign analysis: 2 _ 2 _ _ (a) lim 2\"" 2" (b) lim 2 x 5* 14 x->2' x 4x+4 ""3 (x + 6x +9)(x- 5)