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AS PHYSICS > MECHANICS 1 > Flashcards

MECHANICS 1 Flashcards

1
Q

ACCELERATION

A

rate of change of velocity (ms-2) vector

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2
Q

AVERAGE SPEED

A

measure of the total distnace travelled in a unit time

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3
Q

BRAKING DISTANCE

A

the distance a vehicle traveles while decelerating to a stop

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4
Q

BRITTLE

A

material that distorts very little even when subject to large stress and does not exhibit andy plastic deformation

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5
Q

CENTRE OF GRAVITY

A

point at which the entire weight of an object can be considered to act

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6
Q

COMPRESSIVE FORCE

A

two + forces that have the effect of reducing the volume of the object on which they are acting, or reducing the length of a spring

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7
Q

COUPLE

A

2 forces that are equal and opposite to each other but not in the same straight line

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8
Q

DENSITY

A

mass oer unit volume (kgm-3) scalar

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9
Q

DISPLACEMENT ( s or x)

A

distance travelled in a particular direction (m) vector

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10
Q

DISTANCE (d)

A

how far one position is from another (m) scalar

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11
Q

DRAG

A

the resistive force that acts on a body when it moves through a fluid

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12
Q

DRAG COEFFICIENT

A

characteristics that determines the amount of drag that acts on an object

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13
Q

DRIFT VELOCITY

A

average velocity of an electrom as it travels through a wire due to p.d.

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14
Q

DUCTILE

A

materials that have a large plastic region & can be drawn into a wire

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15
Q

ELASTIC DEFORMATION

A

object will return to its original shape when the deforming force is removed

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16
Q

ELASTIC LIMIT

A

point at which elastic deformation becomes plastic deformation

17
Q

ELASTIC POTENTIAL ENERGY

A

energy stored in a stretched or compressed object (J) scalar

18
Q

ENERGY (E)

A

the stored ability to do work (J) scalar

19
Q

FORCE (F)

A

a push or pull on an object (N) vector

20
Q

FORCE CONSTANT (k)

A

constant of proportionality in Hooke’s law (Nm-1)

AS PHYSICS (6 decks)

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