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phisics > Force Moments Work And Power > Flashcards

Force Moments Work And Power Flashcards

1
Q

Force

A

A force causes a stationary object to move

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2
Q

Newton meter

A

Forces can be measured by it

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3
Q

Push

A

Changes the velocity of an object

Eg pushing a door open

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4
Q

Pull

A

Changes the velocity of an object

Eg pulling a window closed

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5
Q

Weight

A

Moves an object towards the ground

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6
Q

Friction

A

Slows down moving object

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7
Q

Electric

A

Causes charged particles to move

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8
Q

Magnetic

A

Causes magnetic materials to move

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9
Q

Friction

A

Is the force that prevents easy movement between two objects in contact

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10
Q

High friction

A

Sand paper, car tyres and rough soled shoes

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11
Q

Low friction

A

Wet soap, ice and glass

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12
Q

Power

A

Is the rate at which work is done

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13
Q

Force measurement

A

Mass x acceleration

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14
Q

Weight measurement

A

Mass x gravity

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15
Q

Advantages for friction

A

Four advantages of friction are can slow down fall

and you can creat fire also you can creat electricity and to walk without slipping

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16
Q

Disadvantages of friction

A

Four disadvantages of friction are in sports there is air and water pushing us back and Forrest fires

17
Q

Work

A

Is when a force moves an object

18
Q

Weight is a force

A

.When gravity acts on our mass, we can find our weight
.Mass is measured in kilograms, acceleration due to gravity is measured in m/s2 and as weight is a force, it is measured in Newtons
.force = mass x acceleration
.weight = mass x gravity

19
Q

Hooke’s law

A

State that the extension of an elastic body (a spring) is directly proportional to the force applied to it

20
Q

Drawing graph for hookes law

A

A graph should always have the following 5 point checklist to get full marks
.A title saying what the graph shows
.A labelled vertical axis and a labelled horizontal axis
.Units written next to the label
.Correct points on the axis
.Points with lines joining them

phisics (3 decks)

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