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m = 0,01 kg
r = 0,1 m
Fd = 40 N
Fd = m*V²/r
wynika z tego, że:
V=√(Fd*r/m)=√(40N*0,1m/0,01kg)=20m/s
p=m*V=0,01kg*20m/s=0,2kg*m/s