<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Have you tried folowing?<br>
<br>
h = 1/2*g*t^2<br></blockquote>I think you may get into trouble for trying that technique on a tall building!</div><div class="gmail_quote"><br></div><div class="gmail_quote">I had heard about the android application, and am a bit sceptical about how accurate it can be, but I suppose if you want to know if something is 50m or 100m tall it will be ok....I'll give some thought to the accuracy of the method next time I am bored for a couple of hours...</div>
<div class="gmail_quote"><br></div><div class="gmail_quote">Graham.<br><div> </div></div>Graham Jones<div>Hartlepool, UK.</div><br>