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v1=2 m/s v2=?
m1=60kg
m2=40kg
Rozwiązanie:
p=m*v
p1=m1*v1
p1=60m/s*2kg
p1=120kg*m/s
p1=p2
60m/s*2kg=40kg*v2
120kg*m/s=40kg*v2 /:40kg
3m/s=v2
Odp. Ania uzyskała prędkość 3m/s. :D