(Solved): Two hockey players collide on the ice and go down together in a tangled heap. Player 1 has a mass ...

Two hockey players collide on the ice and go down together in a tangled heap. Player 1 has a mass of \( 105 \mathrm{~kg} \) and player 2 has a mass of \( 92.0 \mathrm{~kg} \). Before the collision, player 1 had a velocity \( \vec{v}_{1, \mathrm{i}} \) of \( 6.60 \mathrm{~m} / \mathrm{s} \) in the \( +x \)-direction, and player \( 2 \mathrm{had} \) a velocity \( \vec{v}_{2, i} \) of \( 5.10 \mathrm{~m} / \mathrm{s} \) at an angle \( \theta_{2, i} \) of \( 72.0^{\circ} \) with respect to the \( +x \)-axis, as shown in the figure. At what final speed \( v_{\mathrm{f}} \) do the players slide together on the ice after the collision? At what angle \( \theta_{\mathrm{f}} \) relative to the \( +x \)-axis do the players slide together on the ice after the collision?