(a)[2]
State the principle of conservation of momentum.
(b(i))[1]
Explain what is meant when the particles collide elastically.
(b(ii))[1]
Calculate the combined initial momentum of A and B.
(b)
As shown in Fig. 5.1, particles A and B undergo an elastic collision.
(b(iii))[2]
State, in terms of $m$, $v_A$ and $v_B$, an expression for the total momentum of A and B after the collision: 1. in the $x$-direction. 2. in the $y$-direction.
(b(iv))[3]
Calculate the magnitudes of $v_A$ and $v_B$ after the collision.