AQA GCSE Combined Science Physics -
Paper 2 Questions and Correct Answers/
Latest Update / Already Graded
Vector quantities
Ans: have magnitude and direction
Examples of vector quantities
Ans: force, velocity, momentum, acceleration
Scalar quantities
Ans: Only have magnitude and no direction
Examples of scalar quantities
Ans: speed, distance, time
Vectors
Ans: represented by an arrow - the length of the arrow shows
the magnitude. The direction of the arrow shows the direction
of the quantity
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A force is
Ans: 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 ....
Ans: contact force
examples of contact forces
Ans: 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 ......
Ans: non contact force
examples of non contact forces
Ans: magnetic force and gravitational force
Two effects of gravity
Ans: - makes all things fall towards the ground
- gives everything a weight
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What is mass?
Ans: The amount of material an object is made of
It is the same value everywhere
Measured using a mass balance
What is weight?
Ans: 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
Ans: Weight (N) = Mass (kg) x Gravitational Field Strength
(N/kg)
W=mg
What is weight directly proportional to?
Ans: mass
What are free body diagrams?
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Ans: Diagrams that show all the forces acting on an object
What is the resultant force?
Ans: The single force that replaces multiple forces acti ng at a
single point
How is work done?
Ans: When a force moves an object through a distance, energy
is transferred and work is done on the object
Equation for 'Work Done'
Ans: Work done (J) = Force (N) x Distance (m)
W=Fs
What is 1J equal to?
Ans: 1Nm
If all the forces acting on an object combine to give a resultant force of
zero then the object is in ?
Ans: equilibrium
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