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v1=2m/s
v2=3m/s
m=1kg
Szuk. v3=?
Roz.
zderzenie doskonale sprężyste
p=m*v
p₀=m*v1-m*v2
p=2m*v3
p₀=p
m(v1-v2)=2m*v3
v3=(v1-v2)/2=(2m/s-3m/s)/2=-0,5m/s
Prędkość kulek po zderzeniu wynosi 0,5m/s
3-2 = 2* v
v = 1/2 = 0,5 [m/s]