Recent content by wolfblood

On wikipedia http://en.wikipedia.org/wiki/Elastic_collision#Two-_and_three-dimensional there is part with thetas but i couldn't change into equation with xA xB yA yB

I don't see i think i am missing something about angles and vector redistribution :(

I hava another question because i still have 3 equations with 4 unknowns could I do something like mA*(vxA0^2+vyA0^2)/2+mB*(vxB0^2+vyB0^2)/2=mA*(vxA^2+vyA^2)/2+mB*(vxB^2+vyB^2)/2 mA*(vxA0^2+vyA0^2)+mB*(vxB0^2+vyB0)=mA*(vxA^2+vyA^2)+mB*(vxB^2+vyB^2) fine...

Please can you simply tell me the equations? May be when i will see them i will understand. The four equations for vxa= vya= vxb= vyb= with variables of ma mb vxa0 vya0 vxb0 vyb0 Please. I get lost

Nor in one direction?

Fine from conservation of momentum in directions i can say that vxA0*mA+vxB0*mB=vxA1*mA+vxB1*mB vyA0*mA+vyB0*mB=vyA1*mA+vyB1*mB from KE conservation I can say that mA*(vxA0^2+vyA0^2)/2+mB*(vxB0^2+vyB0^2)/2=mA*(vxA^2+vyA^2)/2+mB*(vxB^2+vyB^2)/2 I have 3 equations with 4 unkowns what am i missing...

Both was moving it's collision of two moving balls representated by circles in code but theoreticaly there can one stay on place if three balls colide in one thick (but i don't need it so complex) and I need right equations for counting that four velocities vxa1 vya1 vxb1 vyb1 from this 6...

Homework Statement I have mass of two points ma and mb than their vertical horizontal vector velocity parts before collision vxa0 vya0 vxb0 vyb0 and i need to calculate vector velocities after collision vxa1 vya1 vxb1 vyb1 I found something like the same vector componets of momemtums will...