What is static friction ?
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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.
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Friction, in general, is a force that makes it harder for two objects to slide alongside one another. Static frictionis the friction that exists between a stationary object and the surface on which it's resting.
A frictional force occurs when you try to push an object alongside a surface
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 is easier to keep the shopping cart moving.
A frictional force occurs when you try to push an object alongside a surface
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 is easier to keep the shopping cart moving.
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