diff --git a/src/sk8plotlib/variables.py b/src/sk8plotlib/variables.py
new file mode 100644
index 0000000..b8d4992
--- /dev/null
+++ b/src/sk8plotlib/variables.py
@@ -0,0 +1,4 @@
+FRAMERATE = 60
+TIMESTEP = 1 / FRAMERATE
+GRAVITY = 10
+TERMINAL_VELOCITY = 150