The rest energy of an electron is 0511 mev the rest energy

Question

The rest energy of an electron is 0.511 MeV. The rest energy of a proton is 938 MeV. Assume both particles have kinetic energies of 1.70 MeV.

(a) Find the speed of the electron.

c

(b) Find the speed of the proton.

c

(c) By how much does the speed of the electron exceed that of the proton?

c

(d) Repeat the calculations assuming both particles have kinetic energies of 1800 MeV. electron's speed m/s proton's speed m/s exceeded speed m/s