Give two examples of sliding friction found in the “real” world.

Sledding or Skiing: When you sled or ski down a hill, the sled or skis slide over the snow. The friction between the sled or skis and the snow is an example of sliding friction. This friction slows down the sled or skis and eventually will stop them if no other forces are applied.

Dragging a heavy object: If you've ever had to move a heavy piece of furniture by dragging it across the floor, you've experienced sliding friction. The friction between the furniture and the floor resists the motion, making it harder to move the object. This is why it's often easier to move heavy objects by pushing or pulling them on wheels, which reduces the friction.