A electron mass m1 911 x 10-31 kg and a proton mass m2

Question

Compute each part of given problem:

Problem: An electron (mass m1 = 9.11 x 10^-31 kg) and a proton (mass m2 = 1.67 x10^-27 kg) attract each other via an electrical force. Suppose that an electron and a proton are released from rest with an initial separation d = 2.80 x 10^-6 m. When their separation has decreased to 0.760 x 10-6 m,

Part I: What is the ratio of the electron's linear momentum magnitude to the proton's linear momentum magnitude?

Part II: What is the ratio of the electron's speed to the proton's speed?

Part III: What is the ratio of the electron's kinetic energy to the proton's kinetic energy?

I need proficient help in the above problem.