Odpowiedź:
Vśr = s/t
tc = 30 min + 10 min + 20 min = 1h
a) v=s/t ; s=vt; s= 50*0,5 = 25 km
sc = 25 + 0 + 15 = 40km
Vśr = 40/1 = 40km/h
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Odpowiedź:
Vśr = s/t
tc = 30 min + 10 min + 20 min = 1h
a) v=s/t ; s=vt; s= 50*0,5 = 25 km
sc = 25 + 0 + 15 = 40km
Vśr = 40/1 = 40km/h