Final answer:
When we decrease the slope of a slide, the friction between the slide and the object sliding down will increase. This is because friction is directly proportional to the normal force and the coefficient of friction.
Step-by-step explanation:
Friction is the force that opposes the motion between two surfaces in contact with each other. When we decrease the slope of a slide, the friction between the slide and the object sliding down will increase.
This can be explained by the basic physics principle that friction is directly proportional to the normal force and the coefficient of friction. When the slope is decreased, the normal force (the force perpendicular to the surface) acting on the object increases. As a result, the friction between the slide and the object also increases.
For example, if you compare a steep slide with a gentle slope, you will find that it is easier to slide down the gentle slope because the friction is lower compared to the steep slide.