# Three gorges dam in china

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#1
Does anybody know how long it takes for a kilogram of water to fall from the top to bottom of the three gorges. It’s an irrelevant and irritating physics question I have in my homework.
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1 year ago
#2
(Original post by Aly Lim)
Does anybody know how long it takes for a kilogram of water to fall from the top to bottom of the three gorges. It’s an irrelevant and irritating physics question I have in my homework.
Using SUVAT:

S - 181m
U - 0 m/s
A - 9.8 m/s/s
T - ?

S = ut + 1/2at^2

181 = 0t + 4.9t^2

181 = 4.9t^2

t^2 = 181/49

t = 6.08s (2dp)
1
#3
(Original post by Sam.T.)
Using SUVAT:

S - 181m
U - 0 m/s
A - 9.8 m/s/s
T - ?

S = ut + 1/2at^2

181 = 0t + 4.9t^2

181 = 4.9t^2

t^2 = 181/49

t = 6.08s (2dp)
Thanks
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