AQA GCSE PHYSICS PAPER 2 PRACTICE
SOLUTION STUDY SHEET QUESTIONS AND
DETAILED ANSWERS
●● Vector
Answer: quantities with a magnitude and direction e.g. acceleration,
force momentum and weight. A vector quantity can be represented as an
arrow, the size representing the magnitude and the direction, the
direction.
●● Non-contact force
Answer: the objects are physically separate e.g.
magnetism/gravity/electrostatic.
●● 3 non-contact forces
Answer: magnetism
gravity
electrostatic
●● Contact force
Answer: objects are physically touching .
,●● 3 contact forces
Answer: friction
resistance
tension
●● Gravity
Answer: Weight is the force acting on an object due to gravity, it acts on
an objects 'centre of mass' and is directly proportional to mass
●● Weigh Equation
Answer: Weight = mass x grav. field strength
●● Resultant forces
Answer: A number of forces acting on an object may be replaced by a
single force that has the same effect as all the original forces acting
together, this single force is the called the resultant force.
In a tug of war, 1000N to the left and 800N to the right. The resultant
force is 200N to the left
,●● Free-Body force diagrams
Answer: When an object is acted on by more than one force you can
draw a free-body force diagram to work out the resultant force on the
object. It shows the forces acting on an object without any other objects
or other forces shown. Each force is shown on the diagram by a vector,
which is an arrow pointing in the direction of the force. ( the normal
force is that component of the contact force that is perpendicular to the
surface that an object contacts)
●● How to resolve forces (force diagram steps)
Answer: 1. Decide on a scale of N per cm.
2. Draw the 2 given forces, giving respect to their length (more cm if
more N) and the angle that you are given
3. Draw a line connecting the end of the 2 other lines to form a triangle
4. Measure the length of this line, then convert it to N by using the scale
●● Relationship between Joules and work done
Answer: When a force causes and object to move, work is done on the
object so when the force causes displacement. One joule of work is done
when a force of 1 newton displaces an object 1 metre. 1 Joule = 1
newton-metre.
, ●● Equation for word done
Answer: work done = force x distance
●● Elastic Deformation
Answer: When an elastic object is stretched, bent, twisted or compressed
it will return to its original form
●● Inelastic Deformation
Answer: Polyethene bags will not return to their original shape after
being deformed, this is inelastic.
●● Hooke's Law
Answer: The extension of an elastic object is directly proportional to the
force applied as long as the limit of proportionality is not exceeded:
●● Equation for force (Hooke's law)
Answer: force = spring constant x extention
●● Extension and compression's relationship with elastic potential
energy explanation
Answer: A force that stretches or compresses a spring does work and
elastic potential energy is stored in the spring, provided the spring is not
elastically deformed, the work done and elastic potential energy are
SOLUTION STUDY SHEET QUESTIONS AND
DETAILED ANSWERS
●● Vector
Answer: quantities with a magnitude and direction e.g. acceleration,
force momentum and weight. A vector quantity can be represented as an
arrow, the size representing the magnitude and the direction, the
direction.
●● Non-contact force
Answer: the objects are physically separate e.g.
magnetism/gravity/electrostatic.
●● 3 non-contact forces
Answer: magnetism
gravity
electrostatic
●● Contact force
Answer: objects are physically touching .
,●● 3 contact forces
Answer: friction
resistance
tension
●● Gravity
Answer: Weight is the force acting on an object due to gravity, it acts on
an objects 'centre of mass' and is directly proportional to mass
●● Weigh Equation
Answer: Weight = mass x grav. field strength
●● Resultant forces
Answer: A number of forces acting on an object may be replaced by a
single force that has the same effect as all the original forces acting
together, this single force is the called the resultant force.
In a tug of war, 1000N to the left and 800N to the right. The resultant
force is 200N to the left
,●● Free-Body force diagrams
Answer: When an object is acted on by more than one force you can
draw a free-body force diagram to work out the resultant force on the
object. It shows the forces acting on an object without any other objects
or other forces shown. Each force is shown on the diagram by a vector,
which is an arrow pointing in the direction of the force. ( the normal
force is that component of the contact force that is perpendicular to the
surface that an object contacts)
●● How to resolve forces (force diagram steps)
Answer: 1. Decide on a scale of N per cm.
2. Draw the 2 given forces, giving respect to their length (more cm if
more N) and the angle that you are given
3. Draw a line connecting the end of the 2 other lines to form a triangle
4. Measure the length of this line, then convert it to N by using the scale
●● Relationship between Joules and work done
Answer: When a force causes and object to move, work is done on the
object so when the force causes displacement. One joule of work is done
when a force of 1 newton displaces an object 1 metre. 1 Joule = 1
newton-metre.
, ●● Equation for word done
Answer: work done = force x distance
●● Elastic Deformation
Answer: When an elastic object is stretched, bent, twisted or compressed
it will return to its original form
●● Inelastic Deformation
Answer: Polyethene bags will not return to their original shape after
being deformed, this is inelastic.
●● Hooke's Law
Answer: The extension of an elastic object is directly proportional to the
force applied as long as the limit of proportionality is not exceeded:
●● Equation for force (Hooke's law)
Answer: force = spring constant x extention
●● Extension and compression's relationship with elastic potential
energy explanation
Answer: A force that stretches or compresses a spring does work and
elastic potential energy is stored in the spring, provided the spring is not
elastically deformed, the work done and elastic potential energy are
