Q4 · 2023 · Paper 2Simple familiar3 marks
QUESTION 4 (3 marks)
Two objects on different planets experience different accelerations due to gravity.
Object Mass (kg) Acceleration due to gravity (m s-2) A 79 1.6 B 32 3.7
Determine which object has the greatest force acting on it. Show your working.
WORKED SOLUTION
3 marksQCAA guide · typeset solution
ANSWER
See worked solution below.
Worked solution
Sample response The
Force on object A= mg = 791.6 =126.4N ~ 130Ndown | • re
Force on object B = mg =32x3.7 =118 N • 120 N down ht
° pr
Object A experiences the greatest force. f1
• id
fo
he response:
e recognises the scenario relates to relationship
between the force due to gravity and mass
[1 mark]
• provides appropriate mathematical reasoning
[1 mark]
• identifies the object experiencing the greatest
force acting on it [1 mark]
One QCAA sample method typeset for web; criterion wording is adapted from the official marking guide.
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Compare your working with the guide above.