A particle of mass m and charge q is thrown at a speed u against a uniform electric field E. How much distance will it travel before coming to momentary rest?

Explanation

To solve the problem, we need to determine the distance a particle of mass \( m \) and charge \( q \) travels before coming to momentary rest when thrown against a uniform electric field \( E \).

### Step-by-Step Solution:

1. **Identify the Forces Acting on the Particle:**
The particle has a charge \( q \) and is subjected to an electric field \( E \). The force \( F \) acting on the particle due to the electric field is given by:
\[
F = qE
...