Janek przebył 210 km w czasie 2 godzin i 48 minut. Oblicz jego średnią prędkość.
s=210km=210000m
t=2h 48min=168minut=10080s
v=s/t
v=210000m/10080s
v≈
20,8m/s
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s=210km=210000m
t=2h 48min=168minut=10080s
v=s/t
v=210000m/10080s
v≈
20,8m/s