Question

what is static and kinetic friction????​

Answer 1

Static friction is what keeps the box from moving without being pushed, and it must be overcome with a sufficient opposing force before the box will move.

Kinetic friction (also referred to as dynamic friction) is the force that resists the relative movement of the surfaces once they're in motion.

Answer 2

Answer:

Static friction is the friction that exists between a stationary object and the surface on which it's resting.

Once the objects have already started moving, kinetic friction takes over. This is the friction that exists between two objects moving relative to each other. Kinetic friction isn't as strong as static friction, and so it's easier to keep the shopping cart moving.

Kinetic friction is defined as a force that acts between moving surfaces. A body moving on the surface experiences a force in the opposite direction of its movement. The magnitude of the force will depend on the coefficient of kinetic friction between the two material.

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