hi, i read in a textbook that one equation for momentum is :(adsbygoogle = window.adsbygoogle || []).push({});

where U = intial velocity, V = Final velocity

U_1 + V_1 = V_2 + U_2 ----------- (1)

Equation (1) is derieve from Equation of " conservation of momentum " and " conservation of kinetic energy". and that they assume that

V_2 is not equal is U_2 and ,

V_1 is not equal to U_1.

why did they take this assumption? ( the book did not offer further explaination)

And what does it mean physically when u take

V_2 = U_2 and ,

V_1 = U_1. ??

+ Collision is Elastic +

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# Homework Help: Qns On The Equations Of Momentum

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