In the figure, projectile particle 1 is an alpha particle and target particle 2 is an oxygen nucleus. The alpha particle is scattered at angle 01 = 57.8 and the oxygen nucleus recoils with speed 1.10 x 105 m/s and at angle 02 = 55.0 In atomic mass units, the mass of the alpha particle is 4.00 u and the mass of the oxygen nucleus is 16.0 u. What are the (a) final and (b) initial speeds of the alpha particle? V2f X Vli VIf (a) Number Units (b) Number Units