2025 AQA GSCE COMBINED SCIENCE|PHYSICS|GRADED
A+|VERIFIED QUESTION AND ANSWER
Vector quantities -answers have magnitude and direction
Examples of vector quantities -answers force, velocity, momentum, acceleration
Scalar quantities -answers Only have magnitude and no direction
Examples of scalar quantities -answers speed, distance, time
Vectors -answers represented by an arrow - the length of the arrow shows the
magnitude. The direction of the arrow shows the direction of the quantity
A force is -answers a push or pull on an object that is caused by it interacting with
something
when two objects are touching for the force to act, its a .... -answers contact force
examples of contact forces -answers friction, air resistance, tension in ropes. etc
If the objects do not need to be touching for the force to act, the force is a ...... -answers
non contact force
examples of non contact forces -answers magnetic force and gravitational force
Two effects of gravity -answers - makes all things fall towards the ground
- gives everything a weight
What is mass? -answers The amount of material an object is made of
It is the same value everywhere
Measured using a mass balance
What is weight? -answers The force acting on an object due to gravity
It depends on the strength of the gravitational field at the location of the object
Measured using a calibrated spring balance - newtonmeter
Equation for Weight -answers Weight (N) = Mass (kg) x Gravitational Field Strength
(N/kg)
W=mg
What is weight directly proportional to? -answers mass
What are free body diagrams? -answers Diagrams that show all the forces acting on an
object
, What is the resultant force? -answers The single force that replaces multiple forces
acting at a single point
How is work done? -answers When a force moves an object through a distance, energy
is transferred and work is done on the object
Equation for 'Work Done' -answers Work done (J) = Force (N) x Distance (m)
W=Fs
What is 1J equal to? -answers 1Nm
If all the forces acting on an object combine to give a resultant force of zero then the
object is in ? -answers equilibrium
What could happen when you apply a force to an object? -answers It may stretch,
compress or bend
What happens when an object is elastically deformed -answers The object can go back
to its original shape and length after the force has been removed
What happens when an object is inelastically deformed? -answers The object won't
return to its original shape and length after the force has been removed
Equation for Force 1 -answers Force (N) = Spring Constant (N/m) x Extension (m)
F=ke
Extension is directly proportional to? (Hooke's Law) -answers The force applied
F∝e
What is the limit of proportionality? -answers The point at which extension is no longer
directly proportional to force
Practical: Investigating the link between force and extension -answers - First, measure
the original length of the spring using a milimetre ruler
- Next, add different masses on the spring and measure the length of the spring in each
case.
- The extension = change in length
- Repeat this process until you have enough measurements ( no fewer than 6)
- Plot a graph with extension of the spring on the x axis and force on the y axis.
- The graph will only start to curve if you exceed the limit of proportionality
Equation for Elastic potential energy -answers Elastic potential energy (J) = 1/2 x Spring
Constant (N/m) x extension^2 (m)
Ee = 1/2Ke^2
A+|VERIFIED QUESTION AND ANSWER
Vector quantities -answers have magnitude and direction
Examples of vector quantities -answers force, velocity, momentum, acceleration
Scalar quantities -answers Only have magnitude and no direction
Examples of scalar quantities -answers speed, distance, time
Vectors -answers represented by an arrow - the length of the arrow shows the
magnitude. The direction of the arrow shows the direction of the quantity
A force is -answers a push or pull on an object that is caused by it interacting with
something
when two objects are touching for the force to act, its a .... -answers contact force
examples of contact forces -answers friction, air resistance, tension in ropes. etc
If the objects do not need to be touching for the force to act, the force is a ...... -answers
non contact force
examples of non contact forces -answers magnetic force and gravitational force
Two effects of gravity -answers - makes all things fall towards the ground
- gives everything a weight
What is mass? -answers The amount of material an object is made of
It is the same value everywhere
Measured using a mass balance
What is weight? -answers The force acting on an object due to gravity
It depends on the strength of the gravitational field at the location of the object
Measured using a calibrated spring balance - newtonmeter
Equation for Weight -answers Weight (N) = Mass (kg) x Gravitational Field Strength
(N/kg)
W=mg
What is weight directly proportional to? -answers mass
What are free body diagrams? -answers Diagrams that show all the forces acting on an
object
, What is the resultant force? -answers The single force that replaces multiple forces
acting at a single point
How is work done? -answers When a force moves an object through a distance, energy
is transferred and work is done on the object
Equation for 'Work Done' -answers Work done (J) = Force (N) x Distance (m)
W=Fs
What is 1J equal to? -answers 1Nm
If all the forces acting on an object combine to give a resultant force of zero then the
object is in ? -answers equilibrium
What could happen when you apply a force to an object? -answers It may stretch,
compress or bend
What happens when an object is elastically deformed -answers The object can go back
to its original shape and length after the force has been removed
What happens when an object is inelastically deformed? -answers The object won't
return to its original shape and length after the force has been removed
Equation for Force 1 -answers Force (N) = Spring Constant (N/m) x Extension (m)
F=ke
Extension is directly proportional to? (Hooke's Law) -answers The force applied
F∝e
What is the limit of proportionality? -answers The point at which extension is no longer
directly proportional to force
Practical: Investigating the link between force and extension -answers - First, measure
the original length of the spring using a milimetre ruler
- Next, add different masses on the spring and measure the length of the spring in each
case.
- The extension = change in length
- Repeat this process until you have enough measurements ( no fewer than 6)
- Plot a graph with extension of the spring on the x axis and force on the y axis.
- The graph will only start to curve if you exceed the limit of proportionality
Equation for Elastic potential energy -answers Elastic potential energy (J) = 1/2 x Spring
Constant (N/m) x extension^2 (m)
Ee = 1/2Ke^2
