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GCSE AQA Physics > P8 Forces > Flashcards

P8 Forces Flashcards

1
Q

Scalar

A

A quantity with only magnitude and a unit

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2
Q

Vector

A

A quantity with magnitude, direction, and a unit

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3
Q

Magnitude

A

The size of something

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4
Q

Distance

A

How far an object has travelled. It is a scalar quantity

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5
Q

Displacement

A

How far away an object is from where it started and in which direction. It is a vector quantity

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6
Q

What can a force do to an object?

A
  • Change the speed
  • Change the direction
  • Change the shape
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7
Q

Contact Forces

A

Where contact is required to exert force on an object

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8
Q

Non-contact Forces

A

A force is exerted from a distance

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9
Q

Friction

A

The force between two surfaces that are sliding, or trying to slide across, each other

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10
Q

Upthurst

A

The force of a liquid pushing up against a solid placed in the liquid

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11
Q

Tension/compression

A

Forces squashing or stretching an object

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12
Q

Air resistance

A

The effect of air on a moving object

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13
Q

Gravity (weight)

A

Non-contact force acting between objects with mass

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14
Q

Electrostatic

A

Force of attraction or repulsion between charged objects

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15
Q

Magnetism

A

Force of attraction or repulsion in a magnetic field

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16
Q

Newton’s third law of motion

A

Whenever two objects interact, the forces they exert on each other are equal in size and opposite in direction

17
Q

Action force

A

The force acting in one direction from an object

18
Q

Reaction force

A

The force acting in the opposite direction from a second object

19
Q

Circular orbits

A

The Sun’s gravity pulls in planets but planets have their velocities, therefore it stay in orbit

20
Q

Centripetal force

A

Acting towards the centre of a circle

21
Q

What would happen if a satellite was launched too fast?

A

It will fly off into space

22
Q

What would happen if a satellite was launched too slow?

A

It will fall to the surface

23
Q

What would happen if a satellite was launched at the correct speed?

A

It will travel in a circular orbit at a constant height and constant speed

24
Q

lesson 4

A

GCSE AQA Physics (16 decks)

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