21. Airplane traveling in the air
22. A boat traveling in water
23. It occurs when two objects slide or rubbed against each other
24. It is a kind of friction that prevents an object from moving against a surface
25. A frictional force associated with the rotational movement of a wheel
Ch ;
A. SLIDING FRICTION
B. FLUID FRICTION
C. STATIC FRICTION
D. ROLLING FRICTION
Answers & Comments
Answers:
Explain:
Static friction is a force that keeps an object at rest. Static friction definition can be written as: The friction experienced when individuals try to move a stationary object on a surface, without actually triggering any relative motion between the body and the surface which it is on.
Fluid friction is a force that restricts the movement either within itself or of another medium moving through the liquid. Due to the movement of the molecules inside the fluid, internal friction occurs, and how the fluid interacts with other matter, external c0nflict occurs.
Rolling friction occurs when a wheel, ball, or cylinder rolls freely over a surface, as in ball and roller bearings. The main source of friction in rolling appears to be dissipation of energy involved in deformation of the objects.
Sliding friction (also called kinetic friction) is a contact force that resists the sliding motion of two objects or an object and a surface.
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