Hey, I'm taking physics as a learn-at-home kinda course to get into school for electrical. I had a question about some of the logic and reason behind what the book is showing me as it doesn't explain much. The example question they gave is as follows: Determine the weight of a 65kg student on earth( g= 9.8m/s2 [down]). Given - g= 9.8m/s2 [down] m = 65kg Required - Fg=? Equation - Fg = mg Solution - Fg = (65kg)(9.8ms2) Fg = 637N Fg = 6.4 x 102N More or less I wanted to know why the 637N was broken up to 6.4 x 102 and how I would go about extrapolating this from every question I come across from now on. Any info is appreciated, I am new to physics and suck at math in general.... p.s. the g's in the equation should have an arrow pointing to the right over them but I have no clue how to write that on this thing... Thanks!