AQA Additional Physics

These are some of my additional physics notes, basically from bitesize but just put all together into a printout. I dont think we need to know equations for AQA cause they give them you, but i swear ive done practise papers and they dont put it on. Hope its helpful :)

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  • Created by: Holly
  • Created on: 09-06-09 13:16
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Forces & Motion

Representing Motion

Distance = speed x time
Dinosaurs Sing Terribly
The slope on a
distancetime graph
represents the speed of an
In a distancetime graph,
when the line is horizontal
the object is stationary.

The velocity of an object is
its speed in a particular…

Page 2

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velocity = acceleration x time
Veronica Ate Tea

To work out distance travelled from the graph above you need to find the area of
the blue sections.
First we work out the area of the light blue triangle, which is ½ bh
= ½ x 32
Then we work…

Page 3

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Acceleration depends on :
the force applied to an object
the object's mass

Doubling the size of the resultant force doubles the acceleration.
Objects with a smaller mass will accelerate more. Doubling the mass of an
object halves the acceleration.

Resultant Force (N) = Mass (kg) x Acceleration (m/s2)

Page 4

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On the moon there is no air resistance, so if a hammer and a feather are both
dropped at the same time they will reach the ground at the same time. They will
have the same acceleration.

The stopping distance of a car depends on:
thinking distance
braking distance


Page 5

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Velocity = momentum/mass
30/1.5 = 20m/s

In a car crash the passengers experience great forces because of the change in
momentum, which can cause injury. If the time taken for the change of momentum
on the body is increased, the forces on the body are reduced too. Seat belts…

Page 6

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The smoke picks up a negative charge when it passes through the negatively
charged metal grid. They are then attracted to the positively charged collecting
plates. They are knocked to remove smoke particles.

The image of the document is projected onto a positively charged copying plate.
Where light falls…

Page 7

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The voltage of each component added together is equal to the voltage across
the cell.

Parallel Circuits

The current is shared across each branch.
The voltage across the cell is equal to the voltage across each branch.

Resistance and Resistors

Electrons collide with atoms more often in a long wire…

Page 8

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Mains Electricity

Mains Plug

The inner wires are colour coded:
The Neutral wire is blue. This is on the left.
The Earth wire is yellow and green. This is in the middle.
The Live wire is brown. This is on the right.

The three pins are made from brass because…

Page 9

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The circuit breaker does the same job as the fuse, but works in a different way.
A springloaded push switch is held in the closed position by a springloaded
soft iron bolt. An electromagnet is arranged so that it can pull the bolt away from
the switch. If the current…

Page 10

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The graph shows direct current displayed on an oscilloscope.

Alternating Current

Alternating current is current that constantly changes direction. Mains electricity
is an ac supply.

The potential difference of the live terminal varies between a large positive value
and a large negative value. However, the neutral terminal is at a…


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