Why I have t=0.7691 on example test?

I have calculate time by formula t=sqrt(2*s/g) there s - distance and g - changing speed (g=10m/c^2). Distance I have calculate by trapezium method. I have distance for this test s=2.9578. There is wrong?:-(

Re: Why I have t=0.7691 on example test?

I find where I made mistake - in idea of solution: traectory of moving barrel is not a parabola, it's a cycloid. But I have next problem - what is formula of cycloid?

*Edited by author 04.10.2006 16:43*

*Edited by author 04.10.2006 16:45*