samochod zwiekszyl swoja predkosc od Vo=10m/s do V=20m/s na odcinku drogi s=100m oblicz przyspieszenie
Witaj :
dane: v₀=10m/s, v=20m/s, s=100m
szukane: a
---------------------------------------------------
a = [v-v₀]/t.......vśr = [v₀+v]/2.........s = vśr*t.......t = s/vśr = 2s/[v₀+v]
a = [v-v₀] *[v₀+v]/2s = [v²-v₀²]/2s = [400m²/s²-100m²/s²]/200m = 1,5m/s²
Szukane przyspieszenie wynosi 1,5m/s².
Semper in altum............................pozdrawiam :)
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Witaj :
dane: v₀=10m/s, v=20m/s, s=100m
szukane: a
---------------------------------------------------
a = [v-v₀]/t.......vśr = [v₀+v]/2.........s = vśr*t.......t = s/vśr = 2s/[v₀+v]
a = [v-v₀] *[v₀+v]/2s = [v²-v₀²]/2s = [400m²/s²-100m²/s²]/200m = 1,5m/s²
Szukane przyspieszenie wynosi 1,5m/s².
Semper in altum............................pozdrawiam :)