the mass of a proton is 1836 times the mass of an electron

Question

a)a proton is traveling at speed v. at what speed (in terms of v) would an electron have the same kinetic energy as the proton?
b) an electron has kinetic energy K. if a proton has the sane speed as the electron. what is the kinetic energy ( in terms of K)

Answer 1

(a) You want
1/2 m_ev_e^2 = 1/2 m_pv_p^2

so that means that
v_e^2/v_p^2 = m_p/m_e = 1836

v_e = √1836 v_p

(b) that would of course be 1836K

Answer 2

Above answer is wrong it’s related to force between two forces