Given
You roll up to a wall on roller blades and push the wall
To find
What is the result of the given situation? What law applies?
Step-by-step explanation
When you roll up to a wall on roller blades and push the wall then you start moving in the opposite direction.
This is because the wall applies equal and opposite force on you.
It applies Newton's third law of motion.
Conclusion
You start to move backward towards your starting point.
The law that applies is Newton's third law.