An electron enters a region of uniform electric field with an initial velocity of 30 km/s in the same direction as the electric field, which has magnitude E = 50 N/C. (a) What is the speed of the electron 1.5 ns after entering this region? (b) How far does the electron travel during the 1.5 ns interval ?

Explanation

To solve the problem step by step, we will break it down into parts (a) and (b) as per the question.

### Given Data:
- Initial velocity of the electron, \( u = 30 \, \text{km/s} = 30 \times 10^3 \, \text{m/s} \)
- Electric field strength, \( E = 50 \, \text{N/C} \)
- Charge of the electron, \( q = -1.6 \times 10^{-19} \, \text{C} \)
- Mass of the electron, \( m = 9.1 \times 10^{-31} \, \text{kg} \)
- Time interval, \( t = 1.5 \, \text{ns} = 1.5 \times 10^{-9} \, \text{s} \)
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