AQA A LEVEL JUNE 2025 PHYSICS 7408/
2 PAPER 2 MARK SCHEME|| A+
force -CORRECTANSWER - this can change something's speed, direction, or shape
- it can be push/repulsive or pull/attractive
vector -CORRECTANSWER a quantity with magnitude (size) AND direction
scalar -CORRECTANSWER a quantity with magnitude (size) but NOT direction
examples of vectors -CORRECTANSWER force, weight, velocity, acceleration,
displacement
examples of scalars -CORRECTANSWER distance, mass, speed, energy, time
contact forces -CORRECTANSWER occur when an object is supported by or strikes
another object e.g. friction
non-contact forces -CORRECTANSWER the objects don't physically come into contact,
e.g. gravity, magnetic force
,mass -CORRECTANSWER the measure of the amount of matter that anything
(including people) are made up of (this is a scalar)
weight -CORRECTANSWER the measure of the force on an object due to gravity
(gravity has a direction, towards the centre of the Earth, so this is a vector)
the Earth's gravity -CORRECTANSWER 9.81m/s² (approx.) - it is in m/s² because
gravity refers to the acceleration that is put on objects as they are pulled in
weight -CORRECTANSWER = mass X gravity (can be rearranged) - (also, gravity will
always be 9.81 on Earth (above))
gravity ideas on the moon and Earth -CORRECTANSWER - the gravity of the moon is
less than on Earth as the moon has less mass than the Earth
- one would weigh less on the moon than on Earth, but still have the same mass
- there is no air resistance on the moon as there is no air, so two objects dropped
simultaneously, regardless of their weight/mass, would hit the ground simultaneously,
as there is no force working against gravity
resultant forces -CORRECTANSWER the eventual force of two forces acting on one
object
- if the forces are acting in the same/opposite directions, just add/subtract
- if they are acting at an angle to each other:
, - draw a scale drawing of all the forces acting
- measure the distance from tip to tip of the forces; thats the resultant force
- use a protractor to find a bearing for the force, as force is a vector (so has to have
direction too)
resolving forces -CORRECTANSWER to resolve a force you want to split it into its
horizontal and vertical components:
- draw a diagram with the info you have
- label the sides
- find one component using trig
- find the other component using trig
work done -CORRECTANSWER the transfer of energy in order to move something - it
is a form of energy, and so is a scalar, as energy is also a scalar
work (Nm or J) -CORRECTANSWER = force (N) X displacement (m) (can be
rearranged)
1 Nm (newtonmetre) -CORRECTANSWER = 1 J (joule)
F∝e → F=ke -CORRECTANSWER the extension of the spring is directly proportional to
the force exerted on it
2 PAPER 2 MARK SCHEME|| A+
force -CORRECTANSWER - this can change something's speed, direction, or shape
- it can be push/repulsive or pull/attractive
vector -CORRECTANSWER a quantity with magnitude (size) AND direction
scalar -CORRECTANSWER a quantity with magnitude (size) but NOT direction
examples of vectors -CORRECTANSWER force, weight, velocity, acceleration,
displacement
examples of scalars -CORRECTANSWER distance, mass, speed, energy, time
contact forces -CORRECTANSWER occur when an object is supported by or strikes
another object e.g. friction
non-contact forces -CORRECTANSWER the objects don't physically come into contact,
e.g. gravity, magnetic force
,mass -CORRECTANSWER the measure of the amount of matter that anything
(including people) are made up of (this is a scalar)
weight -CORRECTANSWER the measure of the force on an object due to gravity
(gravity has a direction, towards the centre of the Earth, so this is a vector)
the Earth's gravity -CORRECTANSWER 9.81m/s² (approx.) - it is in m/s² because
gravity refers to the acceleration that is put on objects as they are pulled in
weight -CORRECTANSWER = mass X gravity (can be rearranged) - (also, gravity will
always be 9.81 on Earth (above))
gravity ideas on the moon and Earth -CORRECTANSWER - the gravity of the moon is
less than on Earth as the moon has less mass than the Earth
- one would weigh less on the moon than on Earth, but still have the same mass
- there is no air resistance on the moon as there is no air, so two objects dropped
simultaneously, regardless of their weight/mass, would hit the ground simultaneously,
as there is no force working against gravity
resultant forces -CORRECTANSWER the eventual force of two forces acting on one
object
- if the forces are acting in the same/opposite directions, just add/subtract
- if they are acting at an angle to each other:
, - draw a scale drawing of all the forces acting
- measure the distance from tip to tip of the forces; thats the resultant force
- use a protractor to find a bearing for the force, as force is a vector (so has to have
direction too)
resolving forces -CORRECTANSWER to resolve a force you want to split it into its
horizontal and vertical components:
- draw a diagram with the info you have
- label the sides
- find one component using trig
- find the other component using trig
work done -CORRECTANSWER the transfer of energy in order to move something - it
is a form of energy, and so is a scalar, as energy is also a scalar
work (Nm or J) -CORRECTANSWER = force (N) X displacement (m) (can be
rearranged)
1 Nm (newtonmetre) -CORRECTANSWER = 1 J (joule)
F∝e → F=ke -CORRECTANSWER the extension of the spring is directly proportional to
the force exerted on it
