Odpowiedź:
Wyjaśnienie:
Filip
m=80kg
h=1583m-1406m =177m
Oblicz
Epf, f - Filipa
Epf=m*g*h
Epf=80kg*10m/s²*177m
Epf=141600J=141,6kJ
Ania
m=50kg
h=2499m-1583m=916m
Epa=50kg*10m/s² *916m =458000J=458kJ
Jarek
m=70kg
h=2159m-1406m=753m
Epj=70kg*10m/s²*753m
=527000J=527kJ
Filip<Ania <Jarek
b)
Ep=656kJ=656000J
h=2499m-1406m=1093m
Obliczamy masę Ani
Ep=mgh----------/gh
m=Ep/gh
m=656000J/(10m/s² *1093m
m=60kg
Energia Ani
m=60kg
h=2159m-1406m=753m
Ep=mgh
Ep=60kg*10m/s²*753m
Ep=451800J=451kJ
Zad. dodatkowe
m=20g=0,02kg
h=15m
Oblicz Ep
Ep=mgh
Ep=0,02kg*10m/s² *15m
Ep=3J
