AQA GCSE Combined Science Physics - Paper 2 Exam
Questions and Answers Grade A+
Vector quantities - Answer-have magnitude and direction
Examples of vector quantities - Answer-force, velocity, momentum, acceleration
Scalar quantities - Answer-Only have magnitude and no direction
Examples of scalar quantities - Answer-speed, distance, time
Vectors - Answer-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 - Answer-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 .... - Answer-contact force
examples of contact forces - Answer-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 ...... -
Answer-non contact force
examples of non contact forces - Answer-magnetic force and gravitational force
Two effects of gravity - Answer-- makes all things fall towards the ground
- gives everything a weight
,What is mass? - Answer-The amount of material an object is made of
It is the same value everywhere
Measured using a mass balance
What is weight? - Answer-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 - Answer-Weight (N) = Mass (kg) x Gravitational Field
Strength (N/kg)
W=mg
What is weight directly proportional to? - Answer-mass
What are free body diagrams? - Answer-Diagrams that show all the forces acting
on an object
What is the resultant force? - Answer-The single force that replaces multiple forces
acting at a single point
How is work done? - Answer-When a force moves an object through a distance,
energy is transferred and work is done on the object
Equation for 'Work Done' - Answer-Work done (J) = Force (N) x Distance (m)
, W=Fs
What is 1J equal to? - Answer-1Nm
If all the forces acting on an object combine to give a resultant force of zero then
the object is in ? - Answer-equilibrium
What could happen when you apply a force to an object? - Answer-It may stretch,
compress or bend
What happens when an object is elastically deformed - Answer-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? - Answer-The object won't
return to its original shape and length after the force has been removed
Equation for Force 1 - Answer-Force (N) = Spring Constant (N/m) x Extension (m)
F=ke
Extension is directly proportional to? (Hooke's Law) - Answer-The force applied
F∝e
What is the limit of proportionality? - Answer-The point at which extension is no
longer directly proportional to force
Questions and Answers Grade A+
Vector quantities - Answer-have magnitude and direction
Examples of vector quantities - Answer-force, velocity, momentum, acceleration
Scalar quantities - Answer-Only have magnitude and no direction
Examples of scalar quantities - Answer-speed, distance, time
Vectors - Answer-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 - Answer-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 .... - Answer-contact force
examples of contact forces - Answer-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 ...... -
Answer-non contact force
examples of non contact forces - Answer-magnetic force and gravitational force
Two effects of gravity - Answer-- makes all things fall towards the ground
- gives everything a weight
,What is mass? - Answer-The amount of material an object is made of
It is the same value everywhere
Measured using a mass balance
What is weight? - Answer-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 - Answer-Weight (N) = Mass (kg) x Gravitational Field
Strength (N/kg)
W=mg
What is weight directly proportional to? - Answer-mass
What are free body diagrams? - Answer-Diagrams that show all the forces acting
on an object
What is the resultant force? - Answer-The single force that replaces multiple forces
acting at a single point
How is work done? - Answer-When a force moves an object through a distance,
energy is transferred and work is done on the object
Equation for 'Work Done' - Answer-Work done (J) = Force (N) x Distance (m)
, W=Fs
What is 1J equal to? - Answer-1Nm
If all the forces acting on an object combine to give a resultant force of zero then
the object is in ? - Answer-equilibrium
What could happen when you apply a force to an object? - Answer-It may stretch,
compress or bend
What happens when an object is elastically deformed - Answer-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? - Answer-The object won't
return to its original shape and length after the force has been removed
Equation for Force 1 - Answer-Force (N) = Spring Constant (N/m) x Extension (m)
F=ke
Extension is directly proportional to? (Hooke's Law) - Answer-The force applied
F∝e
What is the limit of proportionality? - Answer-The point at which extension is no
longer directly proportional to force
