# Thinking outside the line

**Classical Mechanics**Level 4

Consider a 1-dimensional motion of a point mass particle of mass \(m=1\text{ kg}\) which is moving in a potential with the potential energy \(V(x)=1/x^2 ~J\). Initially the particle has velocity \(5\text{ m/s}\) and position \(x=1\text{ m}\). Find the position \(x\) **in m** of the particle at \(t=5\text{ s}\).

**Details and assumptions**

Hint: Can you figure out how to make this a simpler 2-d problem?