Newton's second law,
The magnitude of the electric force experienced by a proton or an electron is equal since they have the same charge.
The ratio of electrons acceleration to proton's acceleration,
The separation of the plates of the capacitors,
A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 45000 m/s.
What will be the final speed of an electron released from rest at the negative plate?
Express your answer to two significant figures and include the appropriate units