Look at the equation. What detail is missing? 3 m/s2= (33 m/s - X)/30 S

The starting velocity.

Explanation:

We must understand that this equation comes from the following equation of kinematics.

where:

Vf = final velocity = 33 [m/s]

Vo = starting velocity [m/s]

a = acceleration = 3 [m/s²]

t = time = 30 [s]

So, these values can be assembly in the following way:

iron would move it is magnetic there is a mag field around the current in the wire