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Progress Journals & Experimental Routines / Re: chasing athleticism
« on: January 11, 2013, 08:17:33 am »How do you go from airtime to SVJ? Trying to recall kinematic eqs while making dinner brb
http://www.adarq.org/adarq-org-special-content/complete-hangtime-to-vj/
If still curious about the theory behind it , it is based on the 'Conservation of energy'
energy at bottom = energy at top => kinetic + mecanical energy at bottom = kinetic + mechanical energy at top.
kinetic energy = 0.5 * mass * velocity ^2
mechanical energy = mass * g * height
But mechanical energy at bottom and kinetic energy at top are zero.
So the equation is 0.5 * mass * velocity^2 = mass * g * height => 0.5 * velocity^2 = g * height [1]
The type of motion is 'constant linear acceleration. so height = velocity*time - 0.5*g*time^2 [2]
Time is the time you took to reach the top, hangtime/2.
There you go, 2 equations with 2 unknown variables ( height, velocity ), solve to height and you are there.
