AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
3 contact forces - ✔✔✔-friction
resistance
tension
3 non-contact forces - ✔✔✔-magnetism
gravity
electrostatic
A change in speed's effect on an orbit - ✔✔✔-If the speed of a satellite in a stable orbit
changes, then the radius of the orbit has to change. For a circular orbit to be maintained, a
specific speed needs to be constant. If this speed is increased, such as by using thrusters, the
orbit will increase in size. If the Speed decreases such as contacting the atmosphere, the orbit
will become smaller.
Satellites too close to the Earth gradually lose speed due to atmospheric drag, the centripetal
force is greater than the velocity so work is done and the satellite crashes into what is was
orbiting.
The opposite happens for an increase in speed at the satellite loses its orbit and goes into space.
Acceleration equation - ✔✔✔-chance in velocity/time
,AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Acceleration Practical Method Part 1 (Measuring the effect of force on acceleration at constant
mass) - ✔✔✔-1.Use the ruler to measure intervals on the bench and draw straight lines or place
tape across the bench at these intervals.
2.Attach the bench pulley to the end of the bench.
3.Tie a length of string to the toy car or trolley. Pass the string over the pulley and attach the
weight stack to the other end of the string.
4.Make sure the string is horizontal and is in line with the toy car or trolley.
5.Hold the toy car or trolley at the start point.
6.Attach the full weight stack (1.0 N) to the end of the string.
7.Release the toy car or trolley at the same time as you start the stopwatch, press the stop
watch (lap mode) at each measured interval on the bench and for the final time at 100 cm.
8.Record the results in the table.
9.Repeat steps 5−8 for decreasing weights on the stack for example, 0.8 N, 0.6 N, 0.4 N, 0.2 N.
Make sure you place the masses that you remove from the weight stack onto the top of the car
each time you decrease the weight.
F=ma, a=F/m, a=1/m x F:
As force increases, so does acceleration
,AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Acceleration Practical Method Part 2 (Measuring the effect of mass on acceleration with a
constant force) - ✔✔✔-1.Setup the bench, pulley, weight stack and car as in steps 1-5 of activity
1
2.Use your results from activity 1 to select a weight for the weight stack that will just accelerate
the car along the bench.
3.Put a 200g mass on the car.
4.Hold the car at the start point.
5.Attach your chosen weight stack to the end of the string
6.Release the car at the same time as you start the stopwatch, press the stopwatch (lap mode)
at each measured interval on the bench and for the final time at 100 cm.
7.Record the results in a table with distances travelled for each mass
8.Repeat steps 5−8 for increasing more masses on the car
F=ma, a=F/m, a=1/m x F:
As mass increases, acceleration decreases
Action between 2 like poles - ✔✔✔-Repulsion
Action between 2 opposite poles - ✔✔✔-Attraction
, AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Aeroplane speed estimate - ✔✔✔-250 m/s
Alternator - ✔✔✔-A simple alternator consists of one side of a coil moving up through the
magnetic field.
As it cuts the field lines it produces potential difference, as it starts moving round (separate
power source) and the coil moves down the induced potential difference reverses direction, this
means the alternator produces an alternating current. (sine curve)
Cars use alternators to maintain the battery's charge, using the engine to produce an input of
motion.
Amplitude - ✔✔✔-The maximum displacement of a point on a wave from its undisturbed point
to its maximum disturbance. This shows the energy within a wave, i.e. a greater amplitude has
more energy
Atmospheric pressure and how it varies by altitude - ✔✔✔-Air pressure is created by air
molecules colliding with a surface, if we consider the density of these particles being same at all
attitudes, the fact the volume of the earth's atmosphere increases as we rise in altitude then we
can tell that the air pressure will decrease as there is more space for the same amount of
particles to bump into each other. Also air is naturally less dense further away from the ground,
reducing collisions and therefore pressure.
Balancing - ✔✔✔-If an object is balanced the clockwise moment is equal to the anticlockwise
moment.
Big Bang theory - ✔✔✔-This states that the universe began from a very small, hot and dense
region. This exploded, creating the universe and spreading matter across it. Red-shifting
supports the Big Bang Theory and since 1998 observations showed that the universe is
expanding, therefore it must have been at one singularity in the past of supernovae suggest
distant galaxies are receding ever faster.
Pass
3 contact forces - ✔✔✔-friction
resistance
tension
3 non-contact forces - ✔✔✔-magnetism
gravity
electrostatic
A change in speed's effect on an orbit - ✔✔✔-If the speed of a satellite in a stable orbit
changes, then the radius of the orbit has to change. For a circular orbit to be maintained, a
specific speed needs to be constant. If this speed is increased, such as by using thrusters, the
orbit will increase in size. If the Speed decreases such as contacting the atmosphere, the orbit
will become smaller.
Satellites too close to the Earth gradually lose speed due to atmospheric drag, the centripetal
force is greater than the velocity so work is done and the satellite crashes into what is was
orbiting.
The opposite happens for an increase in speed at the satellite loses its orbit and goes into space.
Acceleration equation - ✔✔✔-chance in velocity/time
,AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Acceleration Practical Method Part 1 (Measuring the effect of force on acceleration at constant
mass) - ✔✔✔-1.Use the ruler to measure intervals on the bench and draw straight lines or place
tape across the bench at these intervals.
2.Attach the bench pulley to the end of the bench.
3.Tie a length of string to the toy car or trolley. Pass the string over the pulley and attach the
weight stack to the other end of the string.
4.Make sure the string is horizontal and is in line with the toy car or trolley.
5.Hold the toy car or trolley at the start point.
6.Attach the full weight stack (1.0 N) to the end of the string.
7.Release the toy car or trolley at the same time as you start the stopwatch, press the stop
watch (lap mode) at each measured interval on the bench and for the final time at 100 cm.
8.Record the results in the table.
9.Repeat steps 5−8 for decreasing weights on the stack for example, 0.8 N, 0.6 N, 0.4 N, 0.2 N.
Make sure you place the masses that you remove from the weight stack onto the top of the car
each time you decrease the weight.
F=ma, a=F/m, a=1/m x F:
As force increases, so does acceleration
,AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Acceleration Practical Method Part 2 (Measuring the effect of mass on acceleration with a
constant force) - ✔✔✔-1.Setup the bench, pulley, weight stack and car as in steps 1-5 of activity
1
2.Use your results from activity 1 to select a weight for the weight stack that will just accelerate
the car along the bench.
3.Put a 200g mass on the car.
4.Hold the car at the start point.
5.Attach your chosen weight stack to the end of the string
6.Release the car at the same time as you start the stopwatch, press the stopwatch (lap mode)
at each measured interval on the bench and for the final time at 100 cm.
7.Record the results in a table with distances travelled for each mass
8.Repeat steps 5−8 for increasing more masses on the car
F=ma, a=F/m, a=1/m x F:
As mass increases, acceleration decreases
Action between 2 like poles - ✔✔✔-Repulsion
Action between 2 opposite poles - ✔✔✔-Attraction
, AQA GCSE Physics 2 Exam with Quality Questions and Smart Answers Guarateed
Pass
Aeroplane speed estimate - ✔✔✔-250 m/s
Alternator - ✔✔✔-A simple alternator consists of one side of a coil moving up through the
magnetic field.
As it cuts the field lines it produces potential difference, as it starts moving round (separate
power source) and the coil moves down the induced potential difference reverses direction, this
means the alternator produces an alternating current. (sine curve)
Cars use alternators to maintain the battery's charge, using the engine to produce an input of
motion.
Amplitude - ✔✔✔-The maximum displacement of a point on a wave from its undisturbed point
to its maximum disturbance. This shows the energy within a wave, i.e. a greater amplitude has
more energy
Atmospheric pressure and how it varies by altitude - ✔✔✔-Air pressure is created by air
molecules colliding with a surface, if we consider the density of these particles being same at all
attitudes, the fact the volume of the earth's atmosphere increases as we rise in altitude then we
can tell that the air pressure will decrease as there is more space for the same amount of
particles to bump into each other. Also air is naturally less dense further away from the ground,
reducing collisions and therefore pressure.
Balancing - ✔✔✔-If an object is balanced the clockwise moment is equal to the anticlockwise
moment.
Big Bang theory - ✔✔✔-This states that the universe began from a very small, hot and dense
region. This exploded, creating the universe and spreading matter across it. Red-shifting
supports the Big Bang Theory and since 1998 observations showed that the universe is
expanding, therefore it must have been at one singularity in the past of supernovae suggest
distant galaxies are receding ever faster.
