diff --git a/as3/README.md b/as3/README.md
index df4c677..54fc145 100644
--- a/as3/README.md
+++ b/as3/README.md
@@ -33,3 +33,20 @@ run the executable with the following command:
 ```
 
 # Instructions on how to use the program
+
+Use W and S to accelerate the penguin forward and backward. Use A and D to
+change heading direction. The penguin will only accelerate in the direction
+facing and will retain its velocity even when not accelerating or changing
+direction.
+
+# Readme Question
+
+`dt` is delta time, which is the time elapsed between each frame, which can be
+found by taking the current time and subtracting the time from the previous
+frame. Raylib provides a function `GetFrameTime()` that returns the time
+elapsed since the last frame, which can be used to calculate `dt`. By using
+`dt`, it ensures that physics calculations are independent of frame rate, since
+otherwise the velocity would be in terms of units per frame rather than units
+per second. By multiplying the velocity by `dt`, it converts the velocity to
+units per second, allowing for consistent movement regardless of the frame
+rate.