diff --git a/src/main/java/JumpGame.java b/src/main/java/JumpGame.java
index 8f1a260..caa33a5 100644
--- a/src/main/java/JumpGame.java
+++ b/src/main/java/JumpGame.java
@@ -1,5 +1,6 @@
 import entities.*;
 import models.IModel;
+import models.ModelType;
 import models.PlayerModel;
 import views.IView;
 import views.PlayerRenderer;
@@ -22,17 +23,18 @@
 
     //---------------------------------------------------------------
     // new
+    private int i = 0;
     private ArrayList<IView> views = new ArrayList<>();
     private ArrayList<IModel> models = new ArrayList<>();
 
-    private PlayerModel playerModel = new PlayerModel(ground);
-
     //---------------------------------------------------------------
     //---------------------------------------------------------------
     //
     public void gravity(double y) {
-        //    this.force.gravity(y);
-        //   this.time.gravity(y);
+//            this.force.gravity(y);
+//           this.time.gravity(y);
+        PlayerModel playerModel = (PlayerModel) models.get(ModelType.PlayerModel);
+        playerModel.updateGravity(y);
     }
 
     //---------------------------------------------------------------
@@ -43,7 +45,8 @@
         models.add(new PlayerModel(ground));
 
         // view
-        views.add(new PlayerRenderer("resources/chicken.png"));
+        views.add(new PlayerRenderer("resources/chicken.png", 0.5));
+
     }
 
     //---------------------------------------------------------------
@@ -54,6 +57,7 @@
         for (IModel model : models) {
             for (IView view : views) view.display(model);
         }
+
         // Modelの更新
         //
         // Space キーのインプット