I'm trying to make a simple simulation of a projectile motion with air drag. I have already implemented it using Euler and fourth order Runge Kutta methods. I am however unsure about Verlet integration. The equation goes as follows:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] r(t + Δt) = 2r(t) - r(t-Δt) + a(t)Δt^2[/tex]

I don't really know what value should I use during first iteration for

[tex]r(t-Δt)[/tex]

Could someone please help me?

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# Verlet integration - first iteration

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