An electron and a proton are released simultanously from rest and start moving t

Question

An electron and a proton are released simultanously from rest and start moving towards each other due to their electrostatic attraction, with no other forces present. Which of the following statements are true just before they are about to collide? A. They are at the midpoint of their initial separation. B. They are closer to the initial location of the proton than they are to the initial location on the electron. C. They are closer to the initial location of the electron than they are to the initial location of the proton. D. They both have the same speed. E. The electric force on the proton due to the electron is stronger in magnitude than the force on the electron due to the proton.

Explanation / Answer

here magnitude of force is same

Fe = Fp

F = ma

Fe = me*a1

Fp = mp*a2

but mp = 1.67 x 10^-27

me = 9.1 x 10^-31

a2 = 1835 a1

so electron is move much faster than proton

so

B.They are closer to the initial location of the proton than they are to the initial location on the electron

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