Odpowiedź :
I (ze wzoru)
Dane: Szukane:
Vśr= 90 km/h s=?
t= 2s
90km/h= 90 ×1000m ÷3600s = 25m/s
V=s÷t
s= V×t
s= 25m/s ×2s = 50m/s
II (na proporcje)
90km→1h
90km→3600s (bo 1h to 3600s)
x → 2s
x=90km×2s ÷ 3600s = 0,05km
0,05km →50m
Dane: Szukane:
Vśr= 90 km/h s=?
t= 2s
90km/h= 90 ×1000m ÷3600s = 25m/s
V=s÷t
s= V×t
s= 25m/s ×2s = 50m/s
II (na proporcje)
90km→1h
90km→3600s (bo 1h to 3600s)
x → 2s
x=90km×2s ÷ 3600s = 0,05km
0,05km →50m