diff --git a/sources/reactphysics3d/physics/Time.cpp b/sources/reactphysics3d/physics/Time.cpp
deleted file mode 100644
index fbc87208..00000000
--- a/sources/reactphysics3d/physics/Time.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-/****************************************************************************
- * Copyright (C) 2009      Daniel Chappuis                                  *
- ****************************************************************************
- * This file is part of ReactPhysics3D.                                     *
- *                                                                          *
- * ReactPhysics3D is free software: you can redistribute it and/or modify   *
- * it under the terms of the GNU Lesser General Public License as published *
- * by the Free Software Foundation, either version 3 of the License, or     *
- * (at your option) any later version.                                      *
- *                                                                          *
- * ReactPhysics3D is distributed in the hope that it will be useful,        *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
- * GNU Lesser General Public License for more details.                      *
- *                                                                          *
- * You should have received a copy of the GNU Lesser General Public License *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
-
- // Libraries
- #include "Time.h"
-
-// We want to use the ReactPhysics3D namespace
-using namespace reactphysics3d;
-
-// Constructor
-Time::Time() {
-    value = 0.0;
-}
-
-// Constructor with arguments
-Time::Time(double value) throw(std::invalid_argument) {
-    // Check if the value is positive
-    if (value >= 0.0) {
-        this->value = value;
-    }
-    else {
-        // We throw an exception
-        throw std::invalid_argument("Exception in Time : Wrong argument, a time value has to be positive");
-    }
- }
-
- // Copy-constructor
- Time::Time(const Time& time) {
-    this->value = time.value;
- }
-
- // Destructor
- Time::~Time() {
-
- }
diff --git a/sources/reactphysics3d/physics/Time.h b/sources/reactphysics3d/physics/Time.h
deleted file mode 100644
index c7b5a962..00000000
--- a/sources/reactphysics3d/physics/Time.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/****************************************************************************
- * Copyright (C) 2009      Daniel Chappuis                                  *
- ****************************************************************************
- * This file is part of ReactPhysics3D.                                     *
- *                                                                          *
- * ReactPhysics3D is free software: you can redistribute it and/or modify   *
- * it under the terms of the GNU Lesser General Public License as published *
- * by the Free Software Foundation, either version 3 of the License, or     *
- * (at your option) any later version.                                      *
- *                                                                          *
- * ReactPhysics3D is distributed in the hope that it will be useful,        *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
- * GNU Lesser General Public License for more details.                      *
- *                                                                          *
- * You should have received a copy of the GNU Lesser General Public License *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
-
- #ifndef TIME_H
- #define TIME_H
-
- // Libraries
- #include <stdexcept>
-  #include <iostream>
-
- // Namespace ReactPhysics3D
- namespace reactphysics3d {
-
-/*  -------------------------------------------------------------------
-    Class Time :
-        The Time class represents a time unity. The value inside is the
-        time value in seconds.
-    -------------------------------------------------------------------
-*/
-class Time {
-    private :
-        long double value;                   // Time in seconds
-
-    public :
-        Time();                                                         // Constructor
-        Time(double value) throw(std::invalid_argument);                // Constructor with arguments
-        Time(const Time& time);                                         // Copy-constructor
-        virtual ~Time();                                                // Destructor
-
-        double getValue() const;                                        // Return the time value in seconds
-        void setValue(double value) throw(std::invalid_argument) ;      // Set the time value
-
-        // Overloaded operators
-        Time operator+(const Time& time2) const;                                // Overloaded operator for addition with Time
-        Time operator-(const Time& time2) const throw(std::invalid_argument);   // Overloaded operator for substraction with Time
-        Time operator*(double number) const throw(std::invalid_argument);       // Overloaded operator for multiplication with a number
-        bool operator<(const Time& time2) const;                                // Overloaded operator for less than comparison
-        bool operator<=(const Time& time2) const;                               // Overloaded operator for less than or equal comparison
-        bool operator>(const Time& time2) const;                                // Overloaded operator for greater than comparison
-};
-
-// --- Inlines functions --- //
-
-// Return the value in seconds
-inline double Time::getValue() const {
-    return value;
-}
-
-// Set the value in seconds
-inline void Time::setValue(double value) throw(std::invalid_argument) {
-
-    // Check if the time value is positive
-    if (value >= 0.0) {
-        this->value = value;
-    }
-    else {
-        // We throw an exception
-        throw std::invalid_argument("Exception in test Time: Wrong argument, a time value has to be positive");
-    }
-}
-
-// Overloaded operator for addition with Time
-inline Time Time::operator+(const Time& time2) const {
-    return Time(value + time2.value);
-}
-
-// Overloaded operator for substraction with Time
-inline Time Time::operator-(const Time& time2) const throw(std::invalid_argument) {
-    // Compute the result of the substraction
-    double result = value - time2.value;
-
-    // If the result is negative
-    if (result <= 0.0) {
-        // We throw an exception
-        throw std::invalid_argument("Exception in Time::operator- : The result should be positive");
-    }
-
-    // Return the result
-    return Time(result);
-}
-
-// Overloaded operator for multiplication with a number
-inline Time Time::operator*(double number) const throw(std::invalid_argument) {
-    // Check if the number is positive
-    if (number > 0.0) {
-        return Time(value*number);
-    }
-    else {
-        // We throw an exception
-        throw std::invalid_argument("Exception in Time::operator* : The argument number has to be positive");
-    }
-}
-
-// Overloaded operator for less than comparison
-inline bool Time::operator<(const Time& time2) const {
-    return (getValue() < time2.getValue());
-}
-
-// Overloaded operator for less than or equal comparison
-inline bool Time::operator<=(const Time& time2) const {
-    return (getValue() <= time2.getValue());
-}
-
-// Overloaded operator for greater than comparison
-inline bool Time::operator>(const Time& time2) const {
-    return (getValue() > time2.getValue());
-}
-
-}
-
- #endif
diff --git a/sources/reactphysics3d/physics/physics.h b/sources/reactphysics3d/physics/physics.h
deleted file mode 100644
index ce339c67..00000000
--- a/sources/reactphysics3d/physics/physics.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/****************************************************************************
- * Copyright (C) 2009      Daniel Chappuis                                  *
- ****************************************************************************
- * This file is part of ReactPhysics3D.                                     *
- *                                                                          *
- * ReactPhysics3D is free software: you can redistribute it and/or modify   *
- * it under the terms of the GNU Lesser General Public License as published *
- * by the Free Software Foundation, either version 3 of the License, or     *
- * (at your option) any later version.                                      *
- *                                                                          *
- * ReactPhysics3D is distributed in the hope that it will be useful,        *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of           *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the             *
- * GNU Lesser General Public License for more details.                      *
- *                                                                          *
- * You should have received a copy of the GNU Lesser General Public License *
- * along with ReactPhysics3D. If not, see <http://www.gnu.org/licenses/>.   *
- ***************************************************************************/
-
-#ifndef PHYSICS_H
-#define PHYSICS_H
-
-// Libraries
-#include "Time.h"
-
-#endif