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KIN 151 > Linear Kinetics Terms > Flashcards

Linear Kinetics Terms Flashcards

1
Q

Centripetal force

A

Force that moves the system towards the center of the path of motion

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2
Q

Coefficient of friction

A

Number that serves as an index of interaction between two surfaces in contact

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3
Q

Coefficient of restitution

A

Number that serves as an index for elasticity

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4
Q

Conservation of momentum

A

In absence of external force, the total momentum of a given system remains constant

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5
Q

Deformation

A

Change in shape

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6
Q

Elastic force

A

Acts to return a spring back to original state

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7
Q

Force

A

Push/pull producing a change in motion

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8
Q

Force plate

A

Using transducers to measure forces involved during motion

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9
Q

Friction

A

Force acting at the area of contact between two surfaces in the direction opposite that of motion/motion tendency

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10
Q

Gait

A

Pattern of movement of organism

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11
Q

Impact

A

Collision characterized by exchange of large force during small time interval

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12
Q

Impulse

A

Change in momentum, applying force over period of time

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13
Q

Inertia

A

Body remains in state of rest/constant velocity unless acted upon by an external force

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14
Q

Kinetic friction

A

Constant magnitude friction generated between two surfaces in contact during motion

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15
Q

Loading

A

Placing a bürden/force on an object

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16
Q

Mass

A

Quantity of matter contained in an object

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17
Q

Maximum static friction

A

Max. amount of friction that can be generated between two static surfaces

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18
Q

Momentum

A

Quantity of motion measured as the product of body’s mass/velocity

19
Q

Normal force

A

Force acting perpendicular to two surfaces in contact

20
Q

Perfectly elastic force

A

Impact during which the velocity of system is conserved

21
Q

Perfectly plastic force

A

Impact resulting in total loss of system velocity

22
Q

Reaction force

A

For every action, there is an equal/opposite reaction force

23
Q

Strain gauge

A

Wire attached to two pads, resistance of wire changes as wire bends

24
Q

Stress

A

Distribution of force within a body; quantified as force divided by area over which the force acts

25
Q

Transducers

A

Converts forces into electrical signals

26
Q

Weight

A

Attractive force that earth exerts on a body

27
Q

Conservation of Mechanical Energy

A

Energy cannot be created or destroyed, only transferred/transformed

28
Q

Energy

A

Ability to do work

29
Q

Ergometry

A

Measuring work and power in the lab

30
Q

External work

A

Work done on another system

31
Q

Internal work

A

Work done within a system

32
Q

Isometric

A

Force occurring without work being done

33
Q

Kinetic energy

A

Energy which a body possesses by virtue of being in motion; ability to do work by virtue of being in motion

34
Q

Mechanical

A

Sum of kinetic/potential energy, no movement = no work

35
Q

Negative work

A

Movement occurs in opposite direction as force

36
Q

Positive work

A

Movement occurs in same direction as force

37
Q

Potential energy

A

Energy by virtue of a body’s position

38
Q

Power

A

Rate of work production, work divided by time at which work was done

39
Q

Spring constant

A

Factor of stiffness in spring force

40
Q

Stiffness

A

Property of an object’s ability to resist deformation

41
Q

Strain energy

A

Capacity to do work by virtue of a deformed body’s return to its original shape

42
Q

Work

A

Amount of energy transferred by a force acting through a distance

43
Q

Work-Energy Theorem

A

Work done on a object by a net force equals the change in kinetic energy of the object

KIN 151 (12 decks)

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