diff --git a/utils.py b/utils.py
index e7a3e73..d1afa7c 100644
--- a/utils.py
+++ b/utils.py
@@ -59,6 +59,15 @@ class Vec:
 
         return Vec(x, y, self.z - other.z)
 
+    def times(self, factor: float) -> 'Vec':
+        x = self.x * factor
+        y = self.y * factor
+
+        if self.z == None:
+            return Vec(x, y)
+
+        return Vec(x, y, self.z * factor)
+
     def div(self, factor: float) -> 'Vec':
         x = self.x / factor
         y = self.y / factor