A turtle and a rabbit are to have a race. The turtle's average speed is $0\mathrm{.}9\frac{m}{s}.$ The rabbit's average speed is $9\frac{m}{s}.$ The distance from the starting line to the finish line is $1500m.$ The rabbit decides to let the turtle run before he starts running to give the turtle a head start. What, approximately, is the maximum time the rabbit can wait before starting to run and still win the race?