## Fundamentals of Physics Extended (10th Edition)

The position is given by $x = 12t^2 - 2t^3$ where x is in meters and t is in seconds. The question asks for the position at t = 3s, therefore we need to find x(3) or plug in t = 3 into the equation. This gives us $x = 12*(3)^2 - 2*(3)^3 = 12 * 9 - 2*(27) = 108 - 54 = 54$ Therefore x = 54m