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Triple Science Physics > P8 > Flashcards

P8 Flashcards

1
Q

Displacement is….

A

Distance in a given direction

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2
Q

Displacement is measured as

A

A straight line between two points

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3
Q

A scalar quantity has….

A

Magnitude only

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4
Q

A vector quantity has…

A

Magnitude and direction

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5
Q

A scale diagram is used to show

A

More than one force acting on an object

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6
Q

Force is measured in

A

Newtons

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7
Q

Newton’s third law

A

“When two objects intersct with each other they extert equal and opposite forces on each other”

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8
Q

Friction is what type of force?

A

Contact

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9
Q

Newton’s first law

A

” If the forces acting on an object are balanced, the resultant force on the object is zero” Is which Law?

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10
Q

If the forces acting on an object are unbalanced the object must be…

A

Accelerating

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11
Q

Free-body diagrams are used to find….

A

Resultant force

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12
Q

Resultant Force can be described as

A

A single force that describes the overall effect on an object

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13
Q

A moment is

A

The turning effect of a force

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14
Q

Moments can be increased by..

A

Increasing the force or increasing the distance the force is applied from the pivot

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15
Q

Moment equation

A

Moment (Nm) = Force (N) x Distance (M)

F1 x D1 = F2 x D2

Moment = Force x Gear Radius

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16
Q

Gears are used to….

A

Multiply forces

17
Q

A Low gear gives…

A

a Low speed and a High turning effect

18
Q

A High gear gives a…

A

High speed and a Low turning effect

19
Q

The Centre of mass of an object is…

A

The point at which the majority of the mass is concentrated.

20
Q

A Symmetrical object’s centre of mass can be found by…

A

Finding the point where the lines of symmetry intersect

21
Q

For an object that is not turning

A

The Clockwise and Anticlockwise Moments must be equal

22
Q

The Parallelogram of forces

A

The Geometric method for finding the result force of non-opposite forces is

23
Q

An object at rest is in…

A

Equilibrium

Triple Science Physics (6 decks)

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