separated the headers and c files properly

cphysics.c

@@ -1,4 +1,5 @@
 #include "cphysics.h"
+#include "objects.h"
 
 void gravity(universe_t* univ){
 
@@ -6,6 +7,3 @@ void gravity(universe_t* univ){
 void magnetism(universe_t* univ){
 
 }
-void mechanics(universe_t* univ){
-
-}