Force Flashcards

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1
Q

Pressure is

A

How much force is put on an area

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2
Q

Force is

A

Is something that causes an object to move

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3
Q

Pressure is measured in

A

N/cm*2

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4
Q

Force is measured in

A

Neutons

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5
Q

Area is measured in

A

Centimetres

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6
Q

Atmospheric pressure is

A

Pressure due to weight of air pressing down on the earth. The higher u go above sea level, the less atmospheric pressure there is

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7
Q

What can you measure atmospheric pressure with?

A

A barometer

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8
Q

What measures the height above sea level?

A

Altimeter

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9
Q

High pressure (weather)

A

Fine weather
No clouds
Summers are nice
Winters have bright days

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10
Q

Low pressure (weather)

A

Windy
Cloudy
Unsettled - lots of rain

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11
Q

Velocity

A

Speed in a particular direction

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12
Q

Friction

A

Is a force which prevents easy movement between 2 objects in contact

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13
Q

Disadvantages of friction

A
  • slows things down
  • wastes energy
  • a lot of unwanted heat and sound is produced
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14
Q

Advantages of friction

A

Used to stop/slow things down

Allows us to walk and not slip

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15
Q

How to reduce friction

A

Lubricate with oil or gas

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16
Q

Hooks law

A

The extension of the Spring is directly proportional to the force that is stretching it

17
Q

Weight

A

Is a force due to gravity.

  • mass (kg) x 10
  • grass to kg = divided by 1000