Odpowiedzi

2010-03-30T20:06:57+02:00
M=2kg
V=5m/s
t=3min
F=0,2N
V2=?

p=F*t
p=0,2N*180s=36kg*m/s

V2=p/m
V2= 36kg*m/s/2kg=18m/s