Equação de Torriceli
HTML
<body>
<form id="formulario">
<fieldset>
<legend>equacao de torriceli</legend>
<label for="v0">v0:</label>
<input type="text" name="v0"/>
<label for="aceleracao">aceleracao:</label>
<input type="text" name="aceleracao"/>
<label for="espaco">espaco:</label>
<input type="text" name="espaco"/>
<label for="vf">vf:</label>
<input type="text" name="vf" disabled="disabled"/>
<a href="#" onclick="calcularvf()">Calcular</a>
</fieldset>
</form>
</body>
CSS
img, table { width:165px; }
fieldset { width:140px; }
label { display:block; float:left;}
label, input {width:68px; margin:3px 0; }
th, td {border:1px solid #ccc; font-size:0.8em;}
JAVASCRIPT
calcularvf = function(){
var formulario = document.getElementById("formulario");
var v0 = +formulario.v0.value;
var aceleracao = +formulario.aceleracao.value;
var espaco = +formulario.espaco.value;
var vf = +formulario.vf.value;
var vf = (v0**+2*aceleracao*espaco)**1/2;
formulario.vf.value = vf.toFixed(2);
}
