Sliding is made difficult by friction because rough surfaces "grab" whatever is attempting to slide. Sledding is easy because snow eases friction.
Who makes Air Force Ones, Boeing.
Yes it is, due to the force of the plate sliding by each other.
The continents of the Earth are sliding through the asthenosphere. This is the viscous part of the mantle on which the plates of the lithosphere sit.
gravity
silence
friction
This question is ambiguous. It depends on what force you are comparing the friction force with. Friction, itself, is a force, which will be directed in a direction OPPOSITE the sliding or attempted sliding of two surfaces.
fricion
Gravity.
Friction is the force that makes it difficult to push an object along many surfaces.
friction is a good force that stops things from sliding
The definition of sliding friction is the force that prevents a sliding object from moving.
Sliding large books requires more force than sliding small books because larger books have more mass and surface area, leading to increased friction with the surface they are sliding on. This increased friction makes it harder to overcome the resistance and slide the large books.
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fk = uk*N Where fk = force of kinetic (sliding) friction uk = kinetic frictional coefficient (dependent on 2 materials sliding past each other) N = normal force (force being exerted perpendicular to the surface across which the object is sliding)
Sliding Friction If you push hard enough on the cardboard box filled with books, it will start sliding. If you stop pushing after the box starts sliding, it will slow down and stop. The force that acted on the box to slow it down was sliding friction. Sliding friction is the force that opposes the motion of two sliding surfaces in contact. Sliding friction exists between all sliding surfaces that are touching, such as the surfaces of the moving parts in a car's engine.
the ammount of force and the surface the object is sliding against