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g=10 m/s²
H=2m
h=1m
s=H-h=1m
Ek/Ep=?
Ek=mv²/2 Ep=mgh
s=at²/2 -> t²=2s/g
v=gt
v²=g²*t²
v²=g²*2s/g
Ek=mv²/2
Ek=m*g²*2s/2g Ep=mgh
Ek=m*g*s Ep=mgh
Ek/Ep=(mv²/2)/mgh
Ek/Ep=(m*(g²*2s/g)/2)/mgh
Ek/Ep=(m*g*s/mgh
Ek/Ep=m*g*h/mgh
Ek/Ep=1/1