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Augusta Tech > Physics > Flashcards

Physics Flashcards

1
Q

Pressure

A

A scalar quantity similar to stress but as applied to liquids and gasses.

common unit- TORR
SI unit - Pascal

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2
Q

Strain

A

The relative Amount of deformation of a body due to stress

Strain= Displacement/ Length

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3
Q

Frictional Force

A

Force which tends to oppose the parallel motion of the two surfaces in contact.
Two factors which affect the magnitude of the frictional force are: The coefficient of friction normal force applied to the object being moved

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4
Q

Stress

A

A vector quantity equal to the total force divided by the are over which the force acts

Stress= Force/Area

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5
Q

Shear

A

Type of force that tends to cut or tear an object

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6
Q

Compression

A

Type of force that tends to compress or push a body together

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7
Q

Tension

A

Force that tends to pull a body apart

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8
Q

Weight

A

A special type of force exerted by massive body on a less massive body.

W=mg

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9
Q

Force

A

A Vector that tends to produce acceleration of a body.

F=ma

EG- Newton
SI- Joules

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10
Q

Acceleration

A

The rate of change of velocity

Acceleration= Change in velocity/ Time interval

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11
Q

Relative Speed

A

The difference in speed of two objects in relation to each other

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12
Q

Average Speed

A

Total distance traveled divided by the time it took.

Total distance/ Total time

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13
Q

Instantaneous Speed

A

How Fast an object is moving at a particular time

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14
Q

Displacement

A

A measure of the straight-line distance from one point to another

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15
Q

Distance

A

A measure of how far an object travels from one point to another

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16
Q

Speed

A

The rate of change of the position of an object

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17
Q

Nonlinear Motion

A

Motion NOT in a straight line

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18
Q

Linear Motion

A

Motion in a straight line

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19
Q

Scalar

A

Has only magnitude
Speed
distance
time
energy
temperature
mass

20
Q

Vector

A

Has magnitude and direction
Displacement
acceleration
velocity
force
gravity

21
Q

Motion

A

The change of position of an object relative to a reference frame

22
Q

Newton’s 3rd Law

A

When one object exerts a force on a second object, the second object experts an equal and opposite force on the first object.

23
Q

Fluid Mechanic Pressure Unit

A

PSI (pounds per square inch)

24
Q

Normal Force

A

The perpendicular reaction force between the object and the surface

25
Q

Coefficient of Friction

A

“How rough” the surface is between the object in contact

26
Q

Momentum

A

A vector. Measures how difficult it is to stop a moving body.

P=mv

27
Q

The Relationship Between Force and Momentum

A

Greater the force on an object, the greater the acceleration & momentum

Velocity increases, Momentum increases

28
Q

Work

A

Energy expended when a force succeeds a force moved through a distance

Wk (joules)= Fd

29
Q

Energy

A

The ability to do work or cause change a scalar quantity units are in Joules

30
Q

Mechanical Energy

A

Energy in motion

31
Q

Potential Energy

A

Energy stored in an object due to its position

32
Q

Kinetic Energy

A

Energy an object possesses because of its motion

33
Q

Internal Energy

A

Energy stopped in an object a result of its temperature

34
Q

Conservation of Energy

A

Energy can not be created or destroyed, only altered form

35
Q

Power

A

Time rate of doing work power is a scalar quantity

Unit for Power in English “horsepower”
IS is “WATT”

36
Q

Fundamental Dimension

A

Dimension that are independent of other dimensions

Mass, Length, Time

37
Q

Lenth

A

Distance between two points

38
Q

Mass

A

Amount of Material in an object

39
Q

Time

A

Duration between two events

40
Q

Common English Standard Unit

A

Feet, Foot pound mass, Second.

41
Q

Common Si Unit

A

Meter, Kilogram, Second

42
Q

Derived Dimensions

A

A physical quantity which contains some combination of fundamental dimensions.

Area, Volume, Speed, Velocity, Acceleration

43
Q

When expressing large number in English standard

A

Scientific method is used in multiples of 10

44
Q

When expressing large numbers in SI

A

Killo, Mega, Giga, Centi, milli,

45
Q

Newton’s 1st Law of Motion

A

Every object persists in a stare of rest or uniform motion in a straight line unless acted upon by an external force.

46
Q

Newton’s 2nd Law of Motion

A

The acceleration of an object is directly proportional to the net force acting on that object, in the direction of the net force, and inversely proportional to the mass of the object.
F=MA

47
Q

Dimention

A

A physical quantity that is measurable

Augusta Tech (3 decks)

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