AIR RESISTANCE AND TERMINAL VELOCITY
2 marks · NormalA suitcase has a mass of 12 kg. Calculate its weight on Earth. Use g = 9.8 N/kg.
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118 N (±1)
Also accept: 117.6 N; 118 N (rounded)
Common mistakes: Multiplying by 10 N/kg instead of 9.8 N/kg
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Marking points
M1 · 1 mark · Substitutes correct values into W = m × g
A1 · 1 mark · Correctly calculates weight in newtons (117.6 N or rounded to 118 N)
Worked solution
W = 12 \times 9.8 = 117.6 \;\text{N}
The weight is 117.6 N, which can be rounded to 118 N.