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index.html
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<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<title>Kinetic Energy Calculator</title>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0" />
<meta name="description" content="Kinetic energy calculator easily finds kinetic energy, mass or velocity with the kinetic energy formula KE = 1/2 mv². Easy to use KE calculator.">
<link rel="preload" href="./assets/fonts/inter-v12-latin-regular.woff2" as="font" crossorigin type="font/woff2">
<link rel="preload" href="./assets/fonts/inter-v12-latin-500.woff2" as="font" crossorigin type="font/woff2">
<link rel="preload" href="./assets/fonts/inter-v12-latin-600.woff2" as="font" crossorigin type="font/woff2">
<link rel="preload" href="./assets/fonts/inter-v12-latin-800.woff2" as="font" crossorigin type="font/woff2">
<script type="text/javascript">
window._ = document.getElementById.bind(document);
window.$ = document.querySelector.bind(document);
window.$$ = document.querySelectorAll.bind(document);
window.defaultSystem = "imperial";
localStorage.setItem("theme", "light");
</script>
<link rel="stylesheet" href="./assets/css/main.min.css" />
<script src="./assets/js/all-calculators.js" defer></script>
</head>
<body style="background-color: transparent !important; min-height: 0 !important">
<div style="width: 100%;">
<div style="width:350px;float:left;padding: 15px;">
<div class="calculator-settings">
<div class="calculator-setting" id="calculator_form">
<div class="calculator-content col">
<div class="input-wrapper row">
<label class="input col">
<input type="hidden" value="energy" id="find"/>
<p class="input__title">Find</p>
<button class="button-switcher button-switcher--active" type="button" onclick="switcher(this, 'find', '')" value="energy" id="find-a">
<span class="button-switcher__text button-switcher__text--active">Energy</span>
</button>
</label>
<label class="input col">
<p class="input__title"></p>
<button class="button-switcher" type="button" onclick="switcher(this, 'find', '')" value="mass" id="find-b">
<span class="button-switcher__text">Mass</span>
</button>
</label>
<label class="input col">
<p class="input__title"></p>
<button class="button-switcher" type="button" onclick="switcher(this, 'find', '')" value="velocity" id="find-c">
<span class="button-switcher__text">Velocity</span>
</button>
</label>
</div>
<div class="input-wrapper row find related-to-find-energy">
<label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<p class="input__title">Energy units</p>
<div class="dropdown-wrapper">
<div class="input-field row " tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="energy_unit_energy">
<option value="J" >
J
</option>
<option value="MJ" >
MJ
</option>
<option value="BTU" >
BTU
</option>
<option value="cal" >
cal
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-mass related-item-hidden">
<label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<p class="input__title">Mass units</p>
<div class="dropdown-wrapper">
<div class="input-field row " tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="mass_unit_mass">
<option value="kg" >
kg
</option>
<option value="g" >
g
</option>
<option value="oz" >
oz
</option>
<option value="lb" >
lb
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-velocity related-item-hidden">
<label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<p class="input__title">Velocity units</p>
<div class="dropdown-wrapper">
<div class="input-field row " tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="velocity_unit_velocity">
<option value="m/s" >
m/s
</option>
<option value="km/h" >
km/h
</option>
<option value="ft/s" >
ft/s
</option>
<option value="mi/h" >
mi/h
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-energy">
<label class="input col ">
<p class="input__title">Mass (m)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="mass_energy" value="40" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="mass_unit_energy">
<option value="kg" >
kg
</option>
<option value="g" >
g
</option>
<option value="oz" >
oz
</option>
<option value="lb" >
lb
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-energy">
<label class="input col ">
<p class="input__title">Velocity (V)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="velocity_energy" value="25" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="velocity_unit_energy">
<option value="m/s" >
m/s
</option>
<option value="km/h" >
km/h
</option>
<option value="ft/s" >
ft/s
</option>
<option value="mi/h" >
mi/h
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-mass related-item-hidden">
<label class="input col ">
<p class="input__title">Energy (p)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="energy_mass" value="500" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="energy_unit_mass">
<option value="J" >
J
</option>
<option value="MJ" >
MJ
</option>
<option value="BTU" >
BTU
</option>
<option value="cal" >
cal
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-mass related-item-hidden">
<label class="input col ">
<p class="input__title">Velocity (V)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="velocity_mass" value="22" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="velocity_unit_mass">
<option value="m/s" >
m/s
</option>
<option value="km/h" >
km/h
</option>
<option value="ft/s" >
ft/s
</option>
<option value="mi/h" >
mi/h
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-velocity related-item-hidden">
<label class="input col ">
<p class="input__title">Energy (p)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="energy_velocity" value="48" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="energy_unit_velocity">
<option value="J" >
J
</option>
<option value="MJ" >
MJ
</option>
<option value="BTU" >
BTU
</option>
<option value="cal" >
cal
</option>
</select>
</div>
</div>
</label> </div>
<div class="input-wrapper row find related-to-find-velocity related-item-hidden">
<label class="input col ">
<p class="input__title">Mass (m)</p>
<div class="input-field row">
<input type="text" class="input-field__input" placeholder="" id="mass_velocity" value="26" />
</div>
</label> <label class="input col speed-calculator,distance-formula-calculator,velocity-calculator,force-calculator">
<div class="dropdown-wrapper">
<div class="input-field row input-field--gray" tabindex="0">
<select class="input-field__text" onchange="toggleRelatedInputs(this)" id="mass_unit_velocity">
<option value="kg" >
kg
</option>
<option value="g" >
g
</option>
<option value="oz" >
oz
</option>
<option value="lb" >
lb
</option>
</select>
</div>
</div>
</label> </div>
</div>
<div class="calculator-content calculator-content--options calculator-content--gray col " >
<div class="calculator-content-head row">
<p class="calculator-content-head__title">Options</p>
<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
<path fill-rule="evenodd" clip-rule="evenodd" d="M5.29289 7.29289C5.68342 6.90237 6.31658 6.90237 6.7071 7.29289L9.99999 10.5858L13.2929 7.29289C13.6834 6.90237 14.3166 6.90237 14.7071 7.29289C15.0976 7.68342 15.0976 8.31658 14.7071 8.70711L10.7071 12.7071C10.3166 13.0976 9.68341 13.0976 9.29289 12.7071L5.29289 8.70711C4.90237 8.31658 4.90237 7.68342 5.29289 7.29289Z" fill="#9CA3AF"></path>
</svg>
</div>
<div class="calculator-content-body col">
<div class="input-wrapper row">
<label class="input col ">
<p class="input__title">Significant Figures</p>
<div class="input-field row">
<textarea name="significant_figures" id="significant_figures"" class="input-field__input input-field__input--textarea" placeholder="" "></textarea>
</div>
<script>
document.querySelectorAll('.input-field__input--textarea').forEach((input) => {
input.addEventListener('input', (e) => {
input.style.height = "40px"
let scrollHeight = e.target.scrollHeight
input.style.height = scrollHeight + "px"
})
})
</script>
</label>
</div>
</div>
</div>
<div class="calculator-content calculator-content--gray calculator-content--footer calculator-content--small row " >
<button class="button button--primary ml-auto" onclick="calculate(this); animateElements();" data-action="calculate" id="action-button">Calculate</button>
</div>
<script type="text/javascript" src="./assets/js/lib/math.min.js" async></script>
<script type="text/javascript" src="./assets/js/calculator.js" defer></script>
</div>
</div>
</div>
<div style="float:left;padding: 15px; overflow: scroll;">
<div class="calculator-result calculator-result--error col" id="error-box">
<div class="row">
<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
<path fill-rule="evenodd" clip-rule="evenodd" d="M10 18C14.4183 18 18 14.4183 18 10C18 5.58172 14.4183 2 10 2C5.58172 2 2 5.58172 2 10C2 14.4183 5.58172 18 10 18ZM8.70711
7.29289C8.31658 6.90237 7.68342 6.90237 7.29289 7.29289C6.90237 7.68342 6.90237 8.31658 7.29289 8.70711L8.58579 10L7.29289 11.2929C6.90237 11.6834 6.90237 12.3166 7.29289
12.7071C7.68342 13.0976 8.31658 13.0976 8.70711 12.7071L10 11.4142L11.2929 12.7071C11.6834 13.0976 12.3166 13.0976 12.7071 12.7071C13.0976 12.3166 13.0976 11.6834 12.7071
11.2929L11.4142 10L12.7071 8.70711C13.0976 8.31658 13.0976 7.68342 12.7071 7.29289C12.3166 6.90237 11.6834 6.90237 11.2929 7.29289L10 8.58579L8.70711 7.29289Z" fill="#F87171" class="dark:fill-red-200"></path>
</svg>
<p class="calculator-error__title">There was an error with your calculation.</p>
</div>
<div class="col" id="error-list"></div>
</div> <span id="calculator_result"><div class="calculator-result col find related-to-find-energy">
<p class="table-cell table-cell--dark table-cell--only-title">Energy</p>
<p class="table-cell table-cell--only animate" id="result_energy">KE = 12500 J</p>
</div>
<div class="calculator-result col find related-to-find-mass related-item-hidden">
<p class="table-cell table-cell--dark table-cell--only-title">Mass</p>
<p class="table-cell table-cell--only animate" id="result_mass">m = 2.0661157024793386 kg</p>
</div>
<div class="calculator-result col find related-to-find-velocity related-item-hidden">
<p class="table-cell table-cell--dark table-cell--only-title">Velocity</p>
<p class="table-cell table-cell--only animate" id="result_velocity">v = 1.9215378456610457 m/s</p>
</div>
</span>
</div>
</div>
<script async src="./assets/js/lib/math.min.js"></script>
<script defer src="./assets/js/functions.js"></script>
</body>
</html>