Q2. [30 points] Calculate the closest distance rc between two particles with mass M1 and M2. Assume M1 has initial velocity V10 and M2 is initially at rest. M1 has positive charge Z1 and M2 charge is positive Z2, and their interaction potential satisfies power law, i.e., V(r)=A/r3 where A is a constant. The initial kinetic energy of M1 is E10=1/2M1V102