Studied by 2 peopleStatic friction
A type of frictional force that keeps an object at rest.
radial axis
Therefore, the force and acceleration vectors are sometimes drawn along a(n) ________ r that moves with the body and always extends from the center of the circle to the body, even though the positive direction of the acceleration is radially outward.
Drag force
A force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
Air density
The mass per unit volume of Earth's atmosphere.
value of C
If the value of v varies significantly, the ________ may also vary, but generally, it is thought to be a constant.
Fluid
Anything that can flow, which is usually liquid or gas.
Circular arc
The arc of a circle between a pair of distinct points.
Kinetic frictional force
Friction as it occurs between two surfaces that are rubbing through each other.
Centripetal force
The inward force on a body moving in a curved path around another body.
Effective cross- sectional area
The area of a two-dimensional shape that is obtained when a three-dimensional object is sliced perpendicular to some specified axis at a point.
drag force
The ________ gradually increases from 0 as the speed of the body increases.
Three main types of forces will be explained in detail here
frictional force, drag force, and centripetal force
This brings us to the next type of frictional force
the kinetic frictional force
Cold-welding
The process of joining (a piece of metal) to another without the use of heat, by forcing them together so hard that adhesion occurs.
Lubrication
the condition of having been made smooth or slippery by the application of a lubricant.
Terminal Velocity
The state of a body moving at a constant speed when all the forces acting on it are balanced out.
Circular Motion
A movement of an object along the circumference of a circle or rotation along a circular path.
Note 
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