AQA GCSE Combined Science: Trilogy Physics Paper 2 (Higher), 2018: Question 7
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Question text
07 Figure 10 shows the horizontal forces acting on a man swimming in the sea.
Figure 10
07.1 Describe the movement of the man when the resultant horizontal force is 0 N
[1 mark]
07.2 The man increases Force A.
Explain what happens to Force B and to the movement of the man.
[4 marks]
07.3 A boat moves through the sea.
There is a 3000 N force to the west on the boat.
There is a 1000 N force to the south on the boat.
Determine the magnitude and direction of the resultant force on the boat.
Draw a vector diagram of these forces to scale on Figure 11
[3 marks]
Figure 11
Magnitude of resultant force = N
Direction of resultant force = °
07.4 The force to the south on the boat increases.
What effect does this have on the resultant force on the boat?
[2 marks]
Mark scheme
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AO /
Question Answers Extra information Mark
Spec. Ref.
07.1 constant velocity allow constant speed 1 AO1
ignore references to stationary 6.5.4.2.1
07.2 allow drag for force B AO1
6.5.4.2.1
the man will accelerate 1
so force B increases 1
until force B equals force A allow until resultant force is 0 1
(N)
the man moves at a higher 1
constant velocity
07.3 horizontal arrow pointing left 1 AO2
(3000 N) and vertical arrow 6.5.1.4
pointing down (1000 N) drawn to
the same scale
resultant force with a value in allow and answer of 3000 N if a 1
the range 3100 N–3200 N scale diagram has been drawn
using the cm squares
direction in the range 251º– allow 17º–19º (to the horizontal) 1
253º (clockwise from north)
07.4 the magnitude will increase allow size 1 AO1
6.5.1.4
direction will change towards the allow answers consistent with 1
south their response to question 07.3
Total 10
Question and mark scheme from the AQA GCSE Combined Science: Trilogy examination, Physics Paper 2 (Higher), 2018. QuestionVault is an independent revision resource; questions remain the copyright of the awarding body.