update the class constructor to include update_position method

notebooks/01a_Classes.ipynb

@@ -24,7 +24,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 2,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2018-07-27T15:05:51.531289Z",
@@ -48,7 +48,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 3,
    "metadata": {
     "ExecuteTime": {
      "end_time": "2018-07-27T15:05:51.905235Z",
@@ -420,21 +420,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 4,
    "metadata": {
     "pycharm": {
      "name": "#%%\n"
     }
    },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "9.0\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "class Particle:\n",
     "    def __init__(self, mass, velocity):\n",
@@ -443,9 +435,38 @@
     "\n",
     "    def momentum(self):\n",
     "        return self.mass * self.velocity\n",
-    "\n",
-    "particle1 = Particle(10.0, 0.9)\n",
-    "print(particle1.momentum())"
+    "    \n",
+    "    def update_position(self, position, dt):\n",
+    "        return position + self.velocity * dt"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "particle1 = Particle(10.0, 0.9)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "5.5"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "particle1.update_position(1, 5)"
    ]
   },
   {
@@ -562,7 +583,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.3"
+   "version": "3.12.4"
   },
   "toc": {
    "nav_menu": {