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Science Revision, forces and speed > Forces and Speed > Flashcards

Forces and Speed Flashcards

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1
Q

What is a force?

A

A push, pull or twist.

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2
Q

Air resistance / drag

A

The force on an object moving through the air that causes it to slow down.

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3
Q

Balanced

A

Forces acting on an object that are the same size but act in opposite directions.

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4
Q

Deform

A

To change shape.

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5
Q

Drag force

A

The force acting on an object moving through the air or water, slowing it down.

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6
Q

Equilibrium

A

Balanced.

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7
Q

Field

A

A region in which something feels force.

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8
Q

Friction

A

The force that acting against an object moving on a surface.

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9
Q

Gravity

A

A non-contact force that acts between two masses.

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10
Q

Kilogram - kg

A

A unit of mass.

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11
Q

Lubricant

A

A substance that reduces friction.

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12
Q

Magnetic force

A

The force between two magnets.

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13
Q

Mass

A

The amount of matter something is made up of.

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14
Q

Newton - n

A

A unit of force

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15
Q

Newton meter

A

Used to measure weight in newtons.

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16
Q

Pull

A

A force

17
Q

Push

A

A force

18
Q

Streamlined shape

A

Shaped to reduce air or water resistance.

19
Q

Unbalanced

A

Opposing forces are unequal.

20
Q

Water resistance

A

A force that slows down an object moving in water.

21
Q

Weight

A

The force of the Earth on an object due to mass.

22
Q

Forces Quick Quiz

A

………….

23
Q

What happens when forces are balanced?

A

The object is stationary, or moves at a constant speed.

24
Q

What happens when forces are imbalanced?

A

The object speeds up or slows down.

25
Q

How do you work out what an object’s weight is on different planets?

A

Weight (N) = gravitational force x mass (kg)

26
Q

How many newtons does 1 KG weigh?

A

10N

27
Q

Speeds__________________

A

Yay Speeds________________________

28
Q

How do you work out speed?

A

Speed = Distance/time

29
Q

How do you work out distance?

A

Distance = Time x Speed

30
Q

How do you work out time?

A

Time = Distance/Speed

31
Q

What is a distance-time graph?

A

A distance-time graph is a graph which shows the time against the distance.

32
Q

Distance-time graph

A

A graph that compares the distance to the time.

33
Q

Density

A

Can be calculated by dividing the mass of an object by its volume.

Science Revision, forces and speed (1 decks)

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