When an object is at rest and the applied force exceeds the maximum static frictional force, the object will begin to move, and the friction acting on it will immediately switch from static to kinetic friction, which is always less than the maximum static friction force.

When you push on an object that is not moving, the friction force that resists the push is called static friction and it can grow up to a maximum value. If the push is stronger than this maximum, static friction can no longer hold the object and it starts to slide. As soon as sliding begins, the resisting force changes to kinetic friction, which is a fixed, smaller value than the maximum static friction. For example, if a box on a table has a maximum static friction of 30 N and you push with 35 N, the box will start to move and the friction force drops to the kinetic friction value, say 20 N. This transition explains why objects that are suddenly set in motion feel a weaker resistance than when they were still.