Speed of a train by quadratic equation

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<blockquote class="wp-embedded-content" data-secret="6PuuJetOBj"><a href="https://saitechinfo.com/2021/07/14/speed-of-a-train-by-quadratic-equation/">Speed of a train by quadratic equation</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://saitechinfo.com/2021/07/14/speed-of-a-train-by-quadratic-equation/embed/#?secret=6PuuJetOBj" width="600" height="400" title="&#8220;Speed of a train by quadratic equation&#8221; &#8212; Saitech Informatics" data-secret="6PuuJetOBj" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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