PHYSICS AQA FINAL PAPER PRACTICE
QUESTIONS WITH VERIFIED ANSWERS
PACKAGE
●● vector
Answer: a quantity with magnitude (size) AND direction
●● scalar
Answer: a quantity with magnitude (size) but NOT direction
●● examples of vectors
Answer: force, weight, velocity, acceleration, displacement
●● examples of scalars
Answer: distance, mass, speed, energy, time
●● contact forces
Answer: occur when an object is supported by or strikes another object
e.g. friction
●● non-contact forces
,Answer: the objects don't physically come into contact, e.g. gravity,
magnetic force
●● mass
Answer: the measure of the amount of matter that anything (including
people) are made up of (this is a scalar)
●● weight
Answer: 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
Answer: 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
Answer: = mass X gravity (can be rearranged) - (also, gravity will
always be 9.81 on Earth (above))
●● gravity ideas on the moon and Earth
Answer: - 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
Answer: 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
Answer: 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
, Answer: 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)
Answer: = force (N) X displacement (m) (can be rearranged)
●● 1 Nm (newtonmetre)
Answer: = 1 J (joule)
●● F∝e → F=ke
Answer: the extension of the spring is directly proportional to the force
exerted on it
●● extension (e)
Answer: the difference between the original length and the extended
length
●● spring constant (k)
Answer: how much the spring stretches with a given force
●● Hooke's law
Answer: states that the strain in a solid (e.g. a spring) is proportional to
the applied stress (within the elastic limit of that solid)
QUESTIONS WITH VERIFIED ANSWERS
PACKAGE
●● vector
Answer: a quantity with magnitude (size) AND direction
●● scalar
Answer: a quantity with magnitude (size) but NOT direction
●● examples of vectors
Answer: force, weight, velocity, acceleration, displacement
●● examples of scalars
Answer: distance, mass, speed, energy, time
●● contact forces
Answer: occur when an object is supported by or strikes another object
e.g. friction
●● non-contact forces
,Answer: the objects don't physically come into contact, e.g. gravity,
magnetic force
●● mass
Answer: the measure of the amount of matter that anything (including
people) are made up of (this is a scalar)
●● weight
Answer: 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
Answer: 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
Answer: = mass X gravity (can be rearranged) - (also, gravity will
always be 9.81 on Earth (above))
●● gravity ideas on the moon and Earth
Answer: - 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
Answer: 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
Answer: 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
, Answer: 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)
Answer: = force (N) X displacement (m) (can be rearranged)
●● 1 Nm (newtonmetre)
Answer: = 1 J (joule)
●● F∝e → F=ke
Answer: the extension of the spring is directly proportional to the force
exerted on it
●● extension (e)
Answer: the difference between the original length and the extended
length
●● spring constant (k)
Answer: how much the spring stretches with a given force
●● Hooke's law
Answer: states that the strain in a solid (e.g. a spring) is proportional to
the applied stress (within the elastic limit of that solid)
