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Free fall, without air resistance, elapse time

ÀÛ¼ºÀÚ Uploader : physics ÀÛ¼ºÀÏ Upload Date: 2016-03-16º¯°æÀÏ Update Date: 2016-03-16Á¶È¸¼ö View : 467

In uniform gravitational field without air resistance.

y(t) = (-1/2)*g*t^2+v0*t+y0  
y(t) : altitude with respect to time (m)  
g : gravity acceleration (9.81 m/s^2 near the surface of the earth)  
t : elapse time (s)  
v0 : initial velocity (m/s)  
y0 : initial altitude (m)  

if v0=0, y0=0, y(t)=height H than H=(1/2)*g*t^2.

t = (H*2/g)^(1/2)

*** Âü°í¹®Çå[References] ***

https://en.wikipedia.org/wiki/Free_fall
t = (H*2/g)^(1/2)
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