A blue ball of mass $m_1 = $ 1 kg hits another red ball, initially at rest, of mass $m_2 = $ 1.5 kg. The red ball is initially travelling along the $x$ axis with ...
Two particles with different masses collide elastically. Show that in the centre-of-mass reference frame the final speeds of the two balls are the same as before the collision. In the centre-of-mass ...
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