速さの調整

index.html

@@ -115,7 +115,7 @@
   const HEXAGON_SIZE = 17.5;
   const BALL_RADIUS = HEXAGON_SIZE / 1.5;
 
-  const MID_SPEED = 5;
+  const MID_SPEED = HEXAGON_SIZE / 3;
   const MIN_SPEED = MID_SPEED / 1.5;
   const MAX_SPEED = MID_SPEED * 1.5;