Odpowiedzi

2010-02-10T16:13:15+01:00
F = 40 N
t = 45 s
V = 9 m/s
m = ?

F = m*a ; a = V/t


F = m*V/t
F*t = m*V

m= F*t/V

m = 40 N* 45 s /9 m/s
m = 200 kg

[ N] = [ kg*m/s^2]
2010-02-10T16:19:28+01:00
Zrobił bym to zadanie ale nei wiem z której to jst klasy :P