Since we are ignoring air resistance which is a non-conservative force, the potential energy will be completely converted into kinetic energy, resulting in a final kinetic energy of 
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Action-reaction forces do not cancel each other because the action force is always greater than the reaction force
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For this case we have by definition that Ohm's Law states that:
Where:
V: It is the voltage
I: It is the current
R: It is resistance
According to the data we have to:
Ω
We have to:
Answer:
The current will be 1.2 Amps