# Forces and motion dual award

what is speed
how fast your going and is measured in m/s, km/h or mph
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what is velocity
how fast your going and the direction your going in and is measured in m/s, km/h or mph
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equation for speed
average speed = distance moved / time taken
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what is acceleration
how quickly the velocity is changing and is measured in m/s²
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equation for acceleration
acceleration = (final velocity - initial velocity) / time taken
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equation for velocity
velocity² = invital velocity² = 2 X acceleration X XXXXXXXXXX
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equation for final speed
(final speed)² = (initial speed)² + 2 X acceleration X distance moved
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what is gravity
the force of attraction between all masses
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what three effects does gravity have
it makes all things accelerate towards the ground. It gives everything a weight. It keeps pants, moons and satellites in their orbits.
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what is mass
the amount of 'stuff' in an object
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what is weight
the force of gravity pulling it towards the centre of the earth
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what will differ if it is on the earth or moon
an object will have the same mass wether its on the earth or moon, but its weight will be different
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what is weight measured in
newtons. It's measured using a newton meter
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what is mass measured in
kilograms with a mass balance
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weight equation
weight = mass X gravitational field strength
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what is a force
a push or pull
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how does gravity or weight act
straight downwards
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how does a reaction force act
acts perpendicular yo s surface and away from it (so if the surface is horizontal, the reaction force acts straight upwards)
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how does electrostatic force act
between two charged objects
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how does thrust act
pushes or pulls
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how does drag, air resistance or friction act
slows things down
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how does lift act
due to an aeroplane wing
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how does tension act
in a robe or cable
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## Other cards in this set

### Card 2

what is velocity

#### Back

how fast your going and the direction your going in and is measured in m/s, km/h or mph

### Card 3

#### Front

equation for speed

### Card 4

#### Front

what is acceleration

### Card 5

#### Front

equation for acceleration