Here's why:
* Static friction is the force that prevents an object from moving when a force is applied to it. It acts in the opposite direction of the applied force, keeping the object stationary.
* Kinetic friction is the force that resists the motion of an object already in motion.
Think of it this way:
Imagine pushing a heavy box across a floor. At first, you need to exert a lot of force to get the box moving. This is because of static friction. Once the box starts moving, the force required to keep it moving is less, as you're now dealing with kinetic friction.
Key points about static friction:
* It's a self-adjusting force, meaning it increases as the applied force increases, until it reaches a maximum value.
* Once the applied force exceeds the maximum static friction, the object starts moving, and static friction transitions to kinetic friction.
