Question 1 [1 mark]
30 Pa
Mark scheme
- A [1] — cao 5 Pa
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30 Pa
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80 Nm²
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50 Pa
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20000 Pa
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35 N
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0.3 m²
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22 m²
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0.15 m²
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20 N
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0.0008 m²
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0.00950 N
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4200 N
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20000 Pa
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1.51 N (accept answers rounding from correct substitution)
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0.025 m²
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3000 Pa
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1200 Pa
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5000 Pa
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2200 Pa
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31847 Pa (accept 32000 Pa to 2 s.f. or correct unsimplified fraction of form 10⁶/(2π))
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4800 N
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75000 Pa
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1500 Pa on A; 2000 Pa on B; greater on face B
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800 kPa
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3P; area is smaller so pressure is larger (for the same force)
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400 Pa
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(i) 12 kPa; (ii) 2400 N
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10 kPa
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19.1 MPa (accept 19 MPa if rounding justified)
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Heel: 2.8 × 10⁶ Pa; flat shoe: 4.2 × 10⁶ Pa; the flat shoe has the higher pressure in this model
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