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  98. 				<a href="/en/coursework/CS1102/GravityCalculator.java.xhtml" title="GravityCalculator.java">Unit 1</a> |
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    109. 

  109. 		<header>
    110. 

  110. 			<h1>GravityCalculator.java</h1>
    111. 

  111. 			<p>Written in <span title="Programming 1">CS 1102</span> of <a href="http://www.uopeople.edu/">University of the People</a>, finalised on 2017-04-12</p>
    112. 

  112. 		</header>
    113. 

  113. <h2>Source code:</h2>
    114. 

  114. <blockquote>
    115. 

  115. <pre><code>/*
    116. 

  116.  * Copyright (C) 2017 Alex Yst
    117. 

  117.  *
    118. 

  118.  * This program is free software: you can redistribute it and/or modify
    119. 

  119.  * it under the terms of the GNU General Public License as published by
    120. 

  120.  * the Free Software Foundation, either version 3 of the License, or
    121. 

  121.  * (at your option) any later version.
    122. 

  122.  *
    123. 

  123.  * This program is distributed in the hope that it will be useful,
    124. 

  124.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    125. 

  125.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    126. 

  126.  * GNU General Public License for more details.
    127. 

  127.  *
    128. 

  128.  * You should have received a copy of the GNU General Public License
    129. 

  129.  * along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
    130. 

  130.  */
    131. 

  131. package gravitycalculator;
    132. 

  132. 

  133. import java.io.*;
    134. 

  134. 

  135. /**
    136. 

  136.  *
    137. 

  137.  * @author Alex Yst
    138. 

  138.  */
    139. 

  139. public class GravityCalculator {
    140. 

  140. 

  141. 	public static void main(String[] arguments) {
    142. 

  142. 

  143. 		double gravity =-9.81; // Earth&apos;s gravity in m/s^2
    144. 

  144. 

  145. 		double initialVelocity = 0.0; // starting velocity of the object
    146. 

  146. 

  147. 		double fallingTime = 10.0; // time in seconds that the object falls
    148. 

  148. 

  149. 		double initialPosition = 1000.0; // Starting position in meters, the calculation will 		determine the ending position in meters
    150. 

  150. /*
    151. 

  151. In this equasion, we multiply by fallingTime twice. Why? Because we need to
    152. 

  152. square it. Java lacks an operator for exponentiation, and calling a function to
    153. 

  153. do it seems like overkill.
    154. 

  154. ...
    155. 

  155. 

  156. For the record though, if we wanted to use the function to do this, Math.pow()
    157. 

  157. would be a good candidate.
    158. 

  158. */
    159. 

  159. 		double finalPosition = 0.5*gravity*fallingTime*fallingTime+initialVelocity*fallingTime+initialPosition;
    160. 

  160. 

  161. 		System.out.println(&quot;The object&apos;s position after &quot; + fallingTime +&quot; seconds is 			&quot;+finalPosition + &quot; m.&quot;);
    162. 

  162. 

  163. 	}
    164. 

  164. }</code></pre>
    165. 

  165. </blockquote>
    166. 

  166. <h2>Output:</h2>
    167. 

  167. <blockquote>
    168. 

  168. <pre>run:
    169. 

  169. The object&apos;s position after 10.0 seconds is 			509.49999999999994 m.
    170. 

  170. BUILD SUCCESSFUL (total time: 1 second)</pre>
    171. 

  171. </blockquote>
    172. 

  172. 		<hr/>
    173. 

  173. 		<p>
    174. 

  174. 			Copyright © 2017 Alex Yst;
    175. 

  175. 			You may modify and/or redistribute this document under the terms of the <a rel="license" href="/license/gpl-3.0-standalone.xhtml"><abbr title="GNU&apos;s Not Unix">GNU</abbr> <abbr title="General Public License version Three or later">GPLv3+</abbr></a>.
    176. 

  176. 			If for some reason you would prefer to modify and/or distribute this document under other free copyleft terms, please ask me via email.
    177. 

  177. 			My address is in the source comments near the top of this document.
    178. 

  178. 			This license also applies to embedded content such as images.
    179. 

  179. 			For more information on that, see <a href="/en/a/licensing.xhtml">licensing</a>.
    180. 

  180. 		</p>
    181. 

  181. 		<p>
    182. 

  182. 			<abbr title="World Wide Web Consortium">W3C</abbr> standards are important.
    183. 

  183. 			This document conforms to the <a href="https://validator.w3.org./nu/?doc=https%3A%2F%2Fy.st.%2Fen%2Fcoursework%2FCS1102%2FGravityCalculator.java.xhtml"><abbr title="Extensible Hypertext Markup Language">XHTML</abbr> 5.1</a> specification and uses style sheets that conform to the <a href="http://jigsaw.w3.org./css-validator/validator?uri=https%3A%2F%2Fy.st.%2Fen%2Fcoursework%2FCS1102%2FGravityCalculator.java.xhtml"><abbr title="Cascading Style Sheets">CSS</abbr>3</a> specification.
    184. 

  184. 		</p>
    185. 

  185. 	</body>
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  186. </html>
    187. 

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  188.