Physics Ch. 4
Terms
undefined, object
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- force
- the cause of an acceleration, or the change in an object's velocity
- contact force
- force that arises from the physical contact of two objects
- field force
- force that can exist between objects, even in the absence of physical contact between the objects
- force diagram
- a diagram of the objects involved in a situation and the forces exerted on the objects
- inertia
- the tendency of an object to maintain its state of motion
- net external force
- the total force resulting from a combination of external forces on an object; sometimes called the resultant force
- equilibrium
- the state in which there is no change in a body's motion
- action-reaction pair
- a pair of simultaneous equal but opposite forces resulting from the interaction of two objects
- weight
- the magnitude of the force of gravity acting on an object
- normal force
- a force exerted by one object on another in a direction perpendicular to the surface of contact
- static friction
- the resistive force that opposes the relative motion of two contacting surfaces that are at rest with respect to one another
- kinetic friction
- the resistive force that opposes the relative motion of two contacting surfaces that are moving past one another
- coefficient of friction
- the ratio of the force of friction to the normal force acting between two objects