Odpowiedzi

2010-01-06T17:53:34+01:00
M = 4 kg
F = 28 N
t = 20 s
V = ?
F*t = m*delta v
delta V = F*t/m

delta V = 28 N* 20 s/4 kg
delta V = 560 kg*m/s *s /4 kg
delta V = ........m/s