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Static friction is a force that keeps an object at rest. It must be overcome to start moving the object. Once an object is in motion, it experiences kinetic friction. If a small amount of force is applied to an object, the static friction has an equal magnitude in the opposite direction.
The permanent character of ancient or medieval buildings was fitted only to a society dominated by static ideals.
https://www.google.com

This image explains how
static friction is created.

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the resistance that one surface or object encounters when moving over another.
Betsy sensed that there was friction between them.
https://www.google.comThis image explains how there is 3 types of frictions. Such as static friction, Sliding friction, Rolling friction.

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Kinetic friction is a force that acts between moving surfaces. An object that is being moved over a surface will experience a force in the opposite direction as its movement. The magnitude of the force depends on the coefficient of kinetic friction between the two kinds of material.
Thus the estimation of kinetic energy is intimately affected by the choice of our base of measurement.
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This image explains how Kinetic friction is created and how to tell there is no kinetic friction.

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Average speed can be viewed as the rate of change in distance with respect to time. A car traveling at an average speed of 25 miles per hour covers an average distance of 25 miles every hour.
We drove at an average speed of 50 mph for over two hours.The image explains how the average speed you need to be in depending the hour.

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In physics, the Net force is the overall force acting on an object. To calculate net force, the body is isolated and interactions with the environment or other constraints are represented as forces and torques in a free-body diagram.
If you know the net force on an object, you can determine the effect of the net force on the objects motion.
https://www.google.com

The image explains how a net force works.