Odpowiedzi

2009-10-24T23:09:32+02:00
A)
s = L₂ = 105m.
v = v₁ - v₂ = 72km/h - 54km/h = 18km/h
t = s/v = 105m / 18 * 1000m/3600s = 21s
b)
s = L₂ = 105m.
v = v₁ + v₂ = 72km/h + 54 km/h = 126km/h
t = s/v = 105m / 126km/h = 105m / 126 * 1000m/3600s = 3s.