Odpowiedzi

2010-01-07T15:38:19+01:00
2010-01-07T15:50:42+01:00
M = 0,5 kg
F= 2 N
t = 5 s
delta V = ?
II zasada dynamiki : F = m*a ; ale a = delta V/t
F = m*delta V/t
F*t = m*delta V
delta V = F*t/m

delta V = 2 N * 5 s/0,5 kg
delta V = 10 kg*m/s^2 *s/0,5 kg
delta v = 20 m/s
[N ] = [kg*m/s^2]