Ec=Ek+Ep
Ek=m·V²/2
Ep=m·g·h
Dane:
m=4kg
h=1500m
V=108km/h=108·1000m/3600s=30m/s
g=10m/s²
Ek=4kg·(30m/s)²/2=(4kg·900m²/s²/)2=1800J
Ep=4kg·10m/s²·1500m=60000J
Ec=1800J+60000J=601800J
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Ec=Ek+Ep
Ek=m·V²/2
Ep=m·g·h
Dane:
m=4kg
h=1500m
V=108km/h=108·1000m/3600s=30m/s
g=10m/s²
Ek=4kg·(30m/s)²/2=(4kg·900m²/s²/)2=1800J
Ep=4kg·10m/s²·1500m=60000J
Ec=1800J+60000J=601800J