Friction on an Inclined Plane

“A sled weighing 80 kg is sliding down a snowy incline that makes an angle of 25 degrees with the horizontal. Calculate the force of friction acting on the sled if it is moving at a constant speed. Show all work. A snowboarder with a mass of 65 kg is descending a snowy slope inclined at an angle of 30 degrees. Determine the force of friction acting on the snowboarder if they maintain a constant velocity. Show all work.”