Friction on an Inclined Plane

“An object with a mass of 8 kg is sliding down an inclined plane at an angle of 25 degrees. If the coefficient of kinetic friction between the object and the surface is 0.3, calculate the force of friction acting on the object. Show all work. A 12 kg box is sliding down an inclined plane that makes an angle of 40 degrees with the horizontal. If the coefficient of kinetic friction is 0.25, determine the force of friction acting on the box. Show all work.”