Answer :
When a hillside is subjected to gravity, the slope material will tend to move downhill. The force that resists this movement is called "friction."
For example, imagine two objects: A ball and an apple. If you were to slide the apple across the floor towards the ball, they would eventually meet up—but it would take longer than if you pushed them apart and then slid them together again. That extra distance between them is because of their resistance to sliding across each other's surfaces; their friction with each other keeps them from moving too far at once.
If you push hard enough against a surface (like pushing on your couch or chair), then you'll see that pushing harder makes it easier for you to push even harder against the same object (because there's less resistance);
To learn more about slope visit: https://brainly.com/question/3605446
#SPJ4
