0580/21 May/Jun 2022, Question 8: Rearranging Formulas
Cambridge IGCSE Mathematics 0580 · Paper 21 (Extended) · Calculator · 3 marks
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The question, in short
Use the formula s = 1/2 at²: substitute a = 0.9 and t = 4 to find s, then rearrange the formula to make t the subject in terms of s and a.
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Part (a) · 1 mark
Substitute a = 0.9 and t = 4 into s = 1/2 at² and calculate the value of s.
- 1s = 1/2 × 0.9 × 4² = 0.45 × 16
- 2= 7.2
Answer7.2
Part (b) · 2 marks
Rearrange s = 1/2 at² to express t in terms of s and a.
- 12s = at²
- 2t² = 2s/a
- 3t = ±√(2s/a)
Answer±√(2s/a)
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Also searched as: 0580/21/M/J/22 · 0580_s22_qp_21 · 0580 s22 21 · question 8.
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