Part A Consider (Figure 1) showing a proton approaching a helium-3 nucleus that has two protons and one neutron. Determine the speed at which the proton must be moving in order to get within 1.4 x 10 15 m of the helium-3 nucleus. Assume that the helium nucleus is a point-like object and does not move. Express your answer with the appropriate units. ? m U = Value S Figure TO = 00 VE Final (the proton is at rest)