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Vo=20m/s
Δt=2s
g=9,81m/s²
OBL
h,t
cialo pierwsze
s1=Vot-1/2gt²
cialo drugie
s2=Vo(t-Δt)-1/2g(t-Δt)²
s1=s2
Vot-1/2gt²=Vot-VoΔt-1/2gt²+gtΔt-1/2gΔt²
-VoΔt+gtΔt-1/2gΔt²=0 Δt≠0 dzile przez Δt
-Vo+gt-1/2gΔt=0
t=Vo/g+1/2Δt
t=20/9,81+1=3,0387
h=Vot-1/2gt²=20*3,0387-0,5*9,81*3,0387²=15,48m
ODP
t=3,0387s
h=15,48m
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