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physics > P2- Forces > Flashcards

P2- Forces Flashcards

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1
Q

Scalar

A

Measurable quantity that has only magnitude

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2
Q

Equilibrium

A

Situation in which there is no resultant force acting on an object

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3
Q

Elastic deformation

A

When a spring is stretched and can return to its original length when the force is removed

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4
Q

Pivot

A

The point around which a seesaw or lever turns

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5
Q

Displacement

A

Distance moved in a particular direction

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6
Q

Crumple Zone

A

An area of the car that is designed to deform and crumple in a collision

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7
Q

Balanced force

A

When 2 or more forces act on a body giving zero resultant force

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8
Q

Stopping Distance

A

Total distance a vehicle travels before coming to a complete stop

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9
Q

Momentum

A

The product of mass and velocity for an object

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10
Q

Plastic Deformation

A

When a spring is stretched and cannot return to its original length when the force is removed

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11
Q

Acceleration

A

The rate at which an object speeds up

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12
Q

Limit of Proportionality

A

Point beyond which the extension of an elastic object is no longer proportional to the force applied

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13
Q

Resultant Force

A

Single force that would have the same effect as all the forces that are acting on the object

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14
Q

Velocity

A

Speed at which an object is moving in a particular direction

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15
Q

Inertia

A

The natural tendency of an object to resist a change in its velocity

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16
Q

Reaction Time

A

Time it takes a vehicle driver to respond to a danger on the road

17
Q

Moment

A

The turning effect of a force

18
Q

Hydraulic System

A

A machine that transmits pressure through a liquid

19
Q

Free-Body diagram

A

Drawing showing the direction and magnitude of the forces acting on an object shown as a point

20
Q

Vector

A

Measurable quantity that has both a magnitude and a direction

21
Q

Distance Travelled (Calculation)

A

Speed x Time

22
Q

Acceleration (Calculation)

A

Change in Velocity ÷ Time

23
Q

Kinetic Energy (Calculation)

A

0.5 × mass × speed^2

24
Q

Momentum (Calculation)

A

Mass × Velocity

25
Q

Force of a spring (Calculation)

A

Extension × spring constant

26
Q

Gravitational force (Calculation)

A

Mass × gravitational field strength

27
Q

Potential Energy (Calculation)

A

Mass × height × gravitational field strength

28
Q

Force (Calculation)

A

Mass × acceleration

29
Q

Power (Calculation)

A

Work done ÷ time

30
Q

Work done (Calculation)

A

Force × distance

31
Q

Pressure (Calculation)

A

Force ÷ area

32
Q

Moment (Calculation)

A

Force × distance

33
Q

Final velocity^2 (Calculation)

A

(2 × acceleration × distance) + initial velocity^2

34
Q

Energy transferred in stretching (Calculation)

A

0.5 × spring constant × extension^2

physics (8 decks)

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