OCR MEI C1 — Question 14 3 marks

Exam BoardOCR MEI
ModuleC1 (Core Mathematics 1)
Marks3
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicSolving quadratics and applications
TypeRearranging formula - single step isolation (square/root/fraction)
DifficultyEasy -1.8 This is a straightforward algebraic manipulation requiring only two steps: multiply both sides by 2, then divide by a and take the square root. It's a basic rearrangement with no quadratic formula needed, simpler than typical A-level questions.
Spec1.02a Indices: laws of indices for rational exponents
14 Make \(t\) the subject of the formula \(s = \frac { 1 } { 2 } a t ^ { 2 }\).
Question 14:
AnswerMarks
\(t = [\pm]\sqrt{\dfrac{2s}{a}}\) (oe)3 marks
- B2 for \(t\) omitted or \(t = \sqrt{\dfrac{s}{\frac{1}{2}a}}\) (oe)B2
- M1 for correct constructive first step in rearrangementM1
- M1 (independent) for finding square root of their \(t^2\)M1 
## Question 14:

$t = [\pm]\sqrt{\dfrac{2s}{a}}$ (oe) | 3 marks |

- B2 for $t$ omitted or $t = \sqrt{\dfrac{s}{\frac{1}{2}a}}$ (oe) | B2 |
- M1 for correct constructive first step in rearrangement | M1 |
- M1 (independent) for finding square root of their $t^2$ | M1 |
14 Make $t$ the subject of the formula $s = \frac { 1 } { 2 } a t ^ { 2 }$.

\hfill \mbox{\textit{OCR MEI C1  Q14 [3]}}
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