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h = 20m
t = 3s
g = 10 m/s²
a = V/t
V = a × t
V = 10 m/s² × 3s = 30 m/s
E kin = 1/2 × m × V²
E kin = 1/2 × 3kg × (30 m/s)² = 1.5kg × 900m²/s² =
= 1350J
h-20m
t-3s
g-10m/s v=10m/s * 3s=30m/s^2
v=30m/s^2
Ek=mv^2/2=3kg*900/2= 2700/2=1350J
wysokość (h) -20m
czas (t)-3s
g-10m/s v=10m/s * 3s=30m/s^2
prędkość=30m/s^2
Energia kinetyczna=mv^2/2=3kg*900/2= 2700/2=1350J