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Science > Forces > Flashcards

Forces Flashcards

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1
Q

Weight

A

Pulls things downwards

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2
Q

Air Resistance

A

Acts against anything moving through air

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3
Q

Friction

A

Acts against anything moving

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4
Q

Upthrust

A

Keeps things afloat

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5
Q

A Force

A

Push or a Pull

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6
Q

Resultant Force

A

The different forces acting on a object that aren’t equal.

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7
Q

Weight is measured in…

A

Newtons

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8
Q

Mass

A

A measurement of how much of something there is.

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9
Q

Weight =

A

Mass x gravitational field strength (e.g earth’s is 10N)

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10
Q

Friction always opposes…

A

Motion

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11
Q

Three things that makes a streamlined shape are

A
  1. Rounded front
  2. Slowly tapering tail
  3. Smooth shape with no projections
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12
Q

2 ways to reduce friction are…

A
  1. Lubrication

2. Streamlining

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13
Q

Density =

A

Mass / Volume

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14
Q

A solid item will float on water if it is…

A

Less dense than water

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15
Q

Wood will ____ on water

A

float

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16
Q

The rougher a surface is the _____ friction it will have

A

more

17
Q

Speed =

A

Distance / Time

18
Q

To measure weight you can use a…

A

Newton meter

19
Q

Tension

A

A stretching force

20
Q

Driving Force

A

A force that is pushing or pulling something

21
Q

Drag force

A

A force acting on an object to slow it down

22
Q

A distance - time graph represents a…

A

Journey.

23
Q

In a distance time graph the ‘Distance’ goes on the…

A

y axis ( therefore ‘Time’ would be on the x axis)

24
Q

If the graph shows a straight diagonal line going up, the object is…

A

Moving at a constant speed

25
Q

If the graph shows a flat line, the object is…

A

At rest

26
Q

If the graph is showing the object is accelerating, there will be a…

A

Curved Line

27
Q

If the graph is showing the object is returning to the start there will be a…

A

Diagonal line going down

28
Q

100g is equivalent to ___N on earth.

A

1

29
Q

To draw a force diagram the arrow needs to be __ the object the force is acting on.

A

on

30
Q

Gravity

A

A non-contact force that acts between two masses.

Science (2 decks)

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