Odpowiedzi

2010-03-31T20:16:58+02:00
Dane:
α = 30°
F = 10 N
t = 5 mni = 300 s
g = 10 m/s²

szukane:
v = ?

a = (v - 0)/t = v/t
am = mg_row = F*sinα
v/t = F*sinα/m = g*sinα
v = t*g*sinα
v = t*g/2 = 3000 m/2 = 1500 m/s

jak masz pytania to pisz na pw