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18km/h*1000m/3600s=5m/s
a=v/t
a=5/20
a=1/4metra na sekunde kwadrat
v₁=72 (km/h)
V₀=54 (km/h)
t=20s
Wzór:
a=(Vk-V₀)/t
Obliczenia:
a=72-54/t
a=18/t
18 km/h=5m/s
a=5/20
a=0,25 (m/s²)
Odp: Przyspieszenie wyniosło 0,25 (m/s²).