a1=1m
q=1/2
s=a1/(1-q)=1/(1-1/2)=2m
S=2s-1=2*2m-1=3m
a1=1/2gt1^2
a2=1/2gt2^2
t2/t1=(a2/a1)^1/2=q^1/2=(1/2)^1/2=q'
t1=(2a1/g)^1/2=(1/5)^1/2
t=t1/(1-q')=(1/5)^1/2/[1-(1/2)^1/2]
T=2t-t1=2(1/5)^1/2/[1-(1/2)^1/2]-(1/5)^1/2
a1=1m
q=1/2
s=a1/(1-q)=1/(1-1/2)=2m
S=2s-1=2*2m-1=3m
a1=1/2gt1^2
a2=1/2gt2^2
t2/t1=(a2/a1)^1/2=q^1/2=(1/2)^1/2=q'
t1=(2a1/g)^1/2=(1/5)^1/2
t=t1/(1-q')=(1/5)^1/2/[1-(1/2)^1/2]
T=2t-t1=2(1/5)^1/2/[1-(1/2)^1/2]-(1/5)^1/2