The Scion iQ is a compact car that is capable of very tight turns-it can spin around in a circle \(8.0 \mathrm{~m}\) in diameter. If a driver goes around such a circle at \(5 \mathrm{~m} / \mathrm{s}\) (a bit faster than \(10 \mathrm{mph}\) ), what is the magnitude of his acceleration?