From 19dcbeea5ceca39810fa148103b991c0a9b98d54 Mon Sep 17 00:00:00 2001
From: ASPP Student <student@localhost>
Date: Thu, 25 Sep 2025 10:36:51 +0300
Subject: [PATCH] update integration method to be inside the particle class

---
 .../exercises/particle_update_position.ipynb  | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/class_materials/exercises/particle_update_position.ipynb b/class_materials/exercises/particle_update_position.ipynb
index b3d829a..43e5e97 100644
--- a/class_materials/exercises/particle_update_position.ipynb
+++ b/class_materials/exercises/particle_update_position.ipynb
@@ -35,7 +35,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 1,
    "metadata": {
     "pycharm": {
      "name": "#%%\n"
@@ -52,20 +52,24 @@
    ],
    "source": [
     "class Particle:\n",
-    "    def __init__(self, mass, velocity):\n",
+    "    def __init__(self, mass, velocity, position=0):\n",
     "        self.mass = mass\n",
     "        self.velocity = velocity\n",
+    "        self.position = position\n",
     "\n",
     "    def momentum(self):\n",
     "        return self.mass * self.velocity\n",
     "\n",
+    "    def update_position(self, dt):\n",
+    "        self.position += self.velocity * dt\n",
+    "\n",
     "particle = Particle(mass=2.1, velocity=0.8)\n",
     "print(particle.momentum())"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "metadata": {},
    "outputs": [
     {
@@ -77,8 +81,10 @@
     }
    ],
    "source": [
-    "position = 8.2\n",
-    "new_position = update_position(particle.velocity, position, dt=0.1)\n",
+    "\n",
+    "particle = Particle(mass=2.1, velocity=0.8, position = 8.2)\n",
+    "particle.update_position(dt=0.1)\n",
+    "new_position = particle.position\n",
     "print(new_position)"
    ]
   },
@@ -104,7 +110,7 @@
  "metadata": {
   "hide_input": false,
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "env",
    "language": "python",
    "name": "python3"
   },
@@ -118,7 +124,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.11"
+   "version": "3.13.6"
   },
   "toc": {
    "nav_menu": {
-- 
2.39.5