An electron is in an electric field of strength $5 \times {10^4}V{m^{ - 1}}$. The field is the only influence on the electron.
The mass and charge of an electron are known.
Which quantity can be calculated without any more information?
the force on the electron
2 )
the momentum of the electron
3 )
the kinetic energy of the electron
4 )
the speed of the electron
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