Maybe air friction not very valid for short distance.


On Fri, 25 Dec 2015 04:38:10 -0000, Jim Windson wrote:

Can't remember very well, but learned this formula about free fall:
(for starting falling speed = 0 m/s)
y=-1/2gt^2
this is independent from object's mass.
Is this correct?

"Rodney Pont" escreveu na mensagem
fohit.me.uk...

I can't remember if that's the correct formula but it is independent of
mass and air resistance. In other words it's only valid in a vacuum.

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