Units (Astrophysics)
2 marks · NormalState two quantities in astrophysics that use the newton (N) as their SI unit. Give one example for each.
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Force (e.g., gravitational force), and weight (e.g., weight of an object on a planet).
Also accept: Gravitational force and weight; both use newtons.
Common mistakes: Giving examples that are not measured in newtons.
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Marking points
B1 · 1 mark · States a quantity (e.g., force) that uses newtons, with example.
B2 · 1 mark · States a second correct quantity (e.g., weight), with example.
Worked solution
Force (such as gravitational force) is measured in newtons. Weight (such as the weight of an object) is also measured in newtons.