hello all, I need your help I need an equation that will enable me to calculate the minimum depth of water necessary to jump from a cliff. I have searched the net for answers and checked out other threads to no avail. If anyone could knock up a nice and easy to use equation then it would be much appreciated. I realise there are many different variables to be factored in but with no physics background to speak of I am really going to struggle with calculating it. I've included some of my stats for example purposes: weight: 75kg height 183cm shoe size 10 water is fresh water, slow moving. For your information I'm eyeing up a 60 foot jump from a waterfall gorge - of course, any help given will be purely hypothetical and in no way leave you at all responsible for my actions.