diff --git a/enginecustom/applicationclass.cpp b/enginecustom/applicationclass.cpp
index 812f6c9..c1caa1c 100644
--- a/enginecustom/applicationclass.cpp
+++ b/enginecustom/applicationclass.cpp
@@ -728,18 +728,25 @@ bool ApplicationClass::Frame(InputClass* Input)
 	//// Update the z position variable each frame.
 	//z -= 0.0174532925f * 0.2f;
 
+	
+
 	for (auto object : m_object)
 	{
-		if (object != nullptr) // Vérifie que l'objet n'est pas nullptr
+		if (object != nullptr) // Check if the object is not null
 		{
-			m_Physics->ApplyGravity(object, frameTime);
 			if (XMVectorGetY(object->GetPosition()) < -10.0f)
 			{
-				// Obtenez la position actuelle de l'objet
-				XMVECTOR currentPosition = object->GetPosition();
-				// Définissez la nouvelle position y tout en conservant les positions x et z actuelles
-				object->SetPosition(XMVectorSetY(currentPosition, 20.0f));
+				XMVECTOR currentPosition = object->GetPosition(); // Obtain the current position of the object
+				object->SetPosition(XMVectorSetY(currentPosition, 20.0f)); // Define the new position of the object
 			}
+			m_Physics->ApplyGravity(object, frameTime);
+			m_Physics->ApplyDrag(object, 0.1f, frameTime);
+			// Update object position based on its velocity
+			XMVECTOR position = object->GetPosition();
+			XMVECTOR velocity = object->GetVelocity();
+			position = position + velocity * frameTime;
+			object->SetPosition(position);
+			object->m_previousPosition = object->GetPosition();
 		}
 	}
 	
diff --git a/enginecustom/applicationclass.h b/enginecustom/applicationclass.h
index 48a1f8d..87550cc 100644
--- a/enginecustom/applicationclass.h
+++ b/enginecustom/applicationclass.h
@@ -160,6 +160,7 @@ private :
 
 	Physics* m_Physics;
 	float m_gravity;
+	XMVECTOR m_previousPosition;
 };
 
 #endif
\ No newline at end of file
diff --git a/enginecustom/enginecustom.vcxproj.filters b/enginecustom/enginecustom.vcxproj.filters
index 76766ec..c1fdf02 100644
--- a/enginecustom/enginecustom.vcxproj.filters
+++ b/enginecustom/enginecustom.vcxproj.filters
@@ -382,8 +382,12 @@
     <None Include="translate.ps">
       <Filter>shader</Filter>
     </None>
-    <None Include="reflection.vs" />
-    <None Include="reflection.ps" />
+    <None Include="reflection.ps">
+      <Filter>shader</Filter>
+    </None>
+    <None Include="reflection.vs">
+      <Filter>shader</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Text Include="font01.txt">
diff --git a/enginecustom/imgui.ini b/enginecustom/imgui.ini
index 8f6e492..c6ae898 100644
--- a/enginecustom/imgui.ini
+++ b/enginecustom/imgui.ini
@@ -3,14 +3,14 @@ Pos=60,60
 Size=400,400
 
 [Window][Khaotic Engine]
-Pos=819,137
+Pos=587,47
 Size=694,210
 
 [Window][Objects]
-Pos=222,19
+Pos=91,47
 Size=492,353
 
 [Window][Terrain]
-Pos=890,19
+Pos=1120,255
 Size=418,94
 
diff --git a/enginecustom/object.cpp b/enginecustom/object.cpp
index a4304c0..35354a1 100644
--- a/enginecustom/object.cpp
+++ b/enginecustom/object.cpp
@@ -7,6 +7,8 @@ Object::Object() : ModelClass()
 	m_translateMatrix = XMMatrixIdentity();
 	m_srMatrix = XMMatrixIdentity();
 	m_worldMatrix = XMMatrixIdentity();
+	m_previousPosition = XMVectorZero();
+	m_velocity = XMVectorZero();
 }
 
 Object::~Object()
@@ -161,4 +163,14 @@ std::string Object::GetName()
 void Object::SetName(std::string name)
 {
 	m_name = name;
+}
+
+void Object::SetVelocity(XMVECTOR velocity)
+{
+	m_velocity = velocity;
+}
+
+XMVECTOR Object::GetVelocity()
+{
+	return m_velocity;
 }
\ No newline at end of file
diff --git a/enginecustom/object.h b/enginecustom/object.h
index c7045f3..5f63163 100644
--- a/enginecustom/object.h
+++ b/enginecustom/object.h
@@ -27,6 +27,9 @@ public:
 	XMVECTOR GetRotation();
 	XMVECTOR GetScale();
 
+	void SetVelocity(XMVECTOR);
+	XMVECTOR GetVelocity();
+
 	void UpdateWorldMatrix();
 	void UpdateSRMatrix();
 	void UpdateScaleMatrix();
@@ -40,6 +43,8 @@ public:
 
 public :
 	bool m_demoSpinning = false;
+	XMVECTOR m_previousPosition;
+	XMVECTOR m_velocity;
 
 private:
 	XMMATRIX m_scaleMatrix;
diff --git a/enginecustom/physics.cpp b/enginecustom/physics.cpp
index def234b..f2a371e 100644
--- a/enginecustom/physics.cpp
+++ b/enginecustom/physics.cpp
@@ -35,8 +35,29 @@ void Physics::ApplyGravity(Object* object, float frameTime)
 		return;
 	}
 
-	// Update the object position
-	XMVECTOR position = object->GetPosition();
-	position = XMVectorSetY(position, XMVectorGetY(position) + m_gravity * frameTime); // Update the Y position
-	object->SetPosition(position);
+	// Get the object velocity
+	XMVECTOR velocity = object->GetVelocity();
+
+	// Update the Y component of the velocity
+	velocity = XMVectorSetY(velocity, XMVectorGetY(velocity) + m_gravity * frameTime);
+
+	// Set the new velocity
+	object->SetVelocity(velocity);
+}
+
+void Physics::ApplyDrag(Object* object, float dragValue, float frameTime)
+{
+	if (object == nullptr) // Verify if the object is not null
+	{
+		return;
+	}
+
+	// Get the velocity of the object
+	XMVECTOR velocity = object->GetVelocity();
+
+	// Calculate the new velocity
+	XMVECTOR newVelocity = velocity - (velocity * dragValue * frameTime);
+
+	// Update the velocity of the object
+	object->SetVelocity(newVelocity);
 }
\ No newline at end of file
diff --git a/enginecustom/physics.h b/enginecustom/physics.h
index 125846d..0084708 100644
--- a/enginecustom/physics.h
+++ b/enginecustom/physics.h
@@ -13,6 +13,8 @@ public:
     float GetGravity(); // Get the gravity value
     void SetGravity(float gravity); // Define the gravity value
     void ApplyGravity(Object*, float); // Apply gravity to an object
+    void ApplyDrag(Object*, float, float);
+
 
 private:
     float m_gravity;