v1=10m\c
delta h=-40m
v-?
(mv1^2)\2+mgh1=(mv^2)\2+mgh2
v1^2-v^2=2g(h1-h2)=-2gdelta h
v=koren(v1^2-2gdeltah)
v=29,73
v1=10m\c
delta h=-40m
v-?
(mv1^2)\2+mgh1=(mv^2)\2+mgh2
v1^2-v^2=2g(h1-h2)=-2gdelta h
v=koren(v1^2-2gdeltah)
v=29,73