Chapter 4 Flashcards

1
Q

acts perpendicular to the surface on which the object rest

A

normal force

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2
Q

all forces acting on inertial frame of reference are real forces, as opposed to fictitious forces that are observed due to an accelerating frame of reference

A

inertial frame of reference

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3
Q

all forces originating from outside of the system are considered external force

A

system

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4
Q

body remains at rest or if in motion remains in motion at a constant velocity unless acted on by a net external force

A

Newton’s first law of motion

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5
Q

can be expressed as a multiple of standard force

A

force

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6
Q

can be represented by vectors

A

force

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7
Q

causes a mass to accelerate

A

net external force

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8
Q

coordinate system that is not accelerating

A

inertial frame of reference

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9
Q

defined by boundaries of an object or collection of object’s being observed

A

system

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10
Q

defined mathematically as a=F/m

A

Newton’s second law of motion

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11
Q

defined mathematically as w=mg, where g is the magnitude and direction of the acceleration due to gravity

A

weight

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12
Q

Fnet on an object with mass is proportional to and in the same direction as the acceleration of the object, a, inversely proportional to the mass

A

Newton’s second law of motion

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13
Q

force acting on object originates outside of the object

A

external force

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14
Q

force past each objects that are touching: ex. include rough surfaces and air resistance

A

friction

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15
Q

force that surface applies to an object to support the weight of an object

A

normal force

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16
Q

force w due to gravity acting on an object of mass

17
Q

fundamental particle of nature by characteristic force field

A

carrier particle

18
Q

Known as law of inertia

A

Newton’s first law of motion

19
Q

measured in kilogram

20
Q

Newton’s first law of motion

A

Law of inertia

21
Q

photons are ______ of electromagnetic force

A

carrier particle

22
Q

pulling force that acts along a medium, esp. stretched flexible connector such as cable or rope

23
Q

push or pull on object with specific magnitude and direction

24
Q

Quantity of matter in substance

25
rate of object's velocity change over time
acceleration
26
reaction force that pushes a body forward in response to a backward force; rockets, airplanes, and cars are pushed forward by a thrust reaction force
thrust
27
region which test particle will experience a force
force field
28
represented by dots, forces are represented by vectors extending outward from the dot
free-body diagram
29
study of how forces affect motion of object's and systems
dynamics
30
tendency of object to remain at rest or remain in motion
inertia
31
vector sum of external forces acting on object
net external force
32
when a rope supports the weight of an object, the force on the object due to the rope is called a tension force
tension
33
whenever one body exerts a force on a second body, first body experiences a force that is equal in magnitude and opposite in direction to the force that the first body exerts
Newton's third law of motion
34
situation which only force acting on an object is force due to gravity
free-fall
35
sketch showing all external forces acting on object
free-body diagram