You are a fitness trainer developing an exercise that involves pulling a heavy crate across a rough surface. You attach a rope to a crate of mass M = 45.0 kg and place it on a carpeted track. Using your physics expertise, you have already determined that the coefficient of kinetic friction between the crate and the carpet is μk = 0.490. To test the apparatus, you have one of your employees pull on the rope as hard as she can. If she pulls with a force of F = 305 N along the direction of the rope, while the rope makes an angle of θ = 29.0° with the floor, what is the acceleration of the box? Use g = 9.80 m/s ² .