diff --git a/Formeln.py b/Formeln.py
index c02668f..acef9c7 100644
--- a/Formeln.py
+++ b/Formeln.py
@@ -3,24 +3,38 @@ import Klassen as k
 konstante_eins = k.Groesse(None, None, True, 1)
 
 Formeln = [k.Formel('Kraftformel', i=k.Groesse('F', 'N', False), a=k.Groesse('m', 'kg', False),
-                    b=k.Groesse('a', 'm/s²', False), z=k.Groesse(None, None, True, 1), y=k.Groesse(None, None, True, 1),
-                    x=k.Groesse(None, None, True, 1)),
+                    b=k.Groesse('a', 'm/s²', False), c=konstante_eins, z=konstante_eins,
+                    y=konstante_eins, x=konstante_eins),
            k.Formel('Gleichm. beschl. Bew.', i=k.Groesse('s', 'm', False), a=k.Groesse(None, None, True, 0.5),
                     b=('a', 'm/s^2', False), c=k.Groesse('t', 's', False), z=konstante_eins, x=konstante_eins,
                     y=k.Groesse(None, None, True, 2)),
            k.Formel('Gewichtskraft', i=k.Groesse('Fg', 'N',False), a=k.Groesse(None,None,True,9.81),b=('h','m',False),
-                    z=konstante_eins,y=konstante_eins,x=konstante_eins),
+                    c=konstante_eins, z=konstante_eins,y=konstante_eins,x=konstante_eins),
            k.Formel('Spannenergie', i=k.Groesse('Espann','J', False), a=k.Groesse(None, None, True, 0.5),
                     b=k.Groesse('D', 'N/m', False), c=k.Groesse('s', 'm', False), x=konstante_eins, y=konstante_eins,
                     z=k.Groesse(None, None, True, 2)),
-           k.Formel('Potentielle Energie' , i=k.Groesse('Epot','J',False),b=k.Groesse('m','kg', False),
-                    c=k.Groesse('Höhe','m',False), z=konstante_eins,y=konstante_eins,x=konstante_eins),
+           k.Formel('Potentielle Energie' , i=k.Groesse('Epot','J',False),a=k.Groesse('m','kg', False),
+                    b=k.Groesse(None, None, True, 9.81), c=k.Groesse('h','m',False), z=konstante_eins,
+                    y=konstante_eins,x=konstante_eins),
            k.Formel('Kinetische Energie',i=k.Groesse('Ekin','J', False), a=k.Groesse(None, None, True, 0.5),
                     b=('m', 'kg', False), c=('v', 'm/s', False), z=konstante_eins, x=konstante_eins,
                     y=k.Groesse(None, None, True, 2)),
            k.Formel('Elektrische Leistung', i=k.Groesse('P', 'W', False), a=k.Groesse('U', 'V', False),
                     b=k.Groesse('I','A', False), c=konstante_eins, z=konstante_eins, x=konstante_eins, y=konstante_eins),
            k.Formel("Geschwindigkeit", i=k.Groesse ('v', 'm/s',False), a=k.Groesse('s', 'm', False),
-                    b=k.Groesse ('t','s', False), z= konstante_eins, y= konstante_eins, x=k.Groesse(None,None,True,-1))
+                    b=k.Groesse ('t','s', False), z= konstante_eins, y= konstante_eins, x=k.Groesse(None,None,True,-1)),
+
+           k.Formel('Wiederstand', i=k.Groesse('R', 'Ohm', False), a=k.Groesse('U', 'V', False),
+                    b=k.Groesse('I', 'A', False), c=konstante_eins, z=konstante_eins, y=k.Groesse(None, None, True, -1),
+                    x=konstante_eins),
+           k.Formel('Impuls', i=k.Groesse('p', 'N*s', False), a=k.Groesse('m', 'kg', False),
+                    b=k.Groesse('v', 'm/s', False), c=konstante_eins, z=konstante_eins, y=konstante_eins,
+                    x=konstante_eins)
            ]
 
+
+def looper(geg, ges):
+    for formel in Formeln:
+        temp_is_solvable = formel.is_solvable(geg, ges)
+        if temp_is_solvable[0]:
+            formel.solve(temp_is_solvable[1])
\ No newline at end of file
diff --git a/Main.py b/Main.py
new file mode 100644
index 0000000..e69de29
diff --git a/user-IO.py b/user-IO.py
new file mode 100644
index 0000000..e69de29