OCR MEI C1 2007 June — Question 2 3 marks

Exam BoardOCR MEI
ModuleC1 (Core Mathematics 1)
Year2007
SessionJune
Marks3
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicSolving quadratics and applications
TypeRearranging formula - single step isolation (square/root/fraction)
DifficultyEasy -2.0 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 involves basic rearrangement of a simple quadratic formula with no problem-solving or conceptual challenge—well below average A-level difficulty.
Spec1.02a Indices: laws of indices for rational exponents
2 Make \(t\) the subject of the formula \(s = \frac { 1 } { 2 } a t ^ { 2 }\).
Question 2:
AnswerMarks Guidance
\(s = \frac{1}{2}at^2\)
\(2s = at^2\)M1 Multiply both sides by 2
\(t^2 = \frac{2s}{a}\)A1 Divide by \(a\)
\(t = \sqrt{\frac{2s}{a}}\)A1 Square root (positive only) 
## Question 2:
$s = \frac{1}{2}at^2$ | |
$2s = at^2$ | M1 | Multiply both sides by 2
$t^2 = \frac{2s}{a}$ | A1 | Divide by $a$
$t = \sqrt{\frac{2s}{a}}$ | A1 | Square root (positive only)

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2 Make $t$ the subject of the formula $s = \frac { 1 } { 2 } a t ^ { 2 }$.

\hfill \mbox{\textit{OCR MEI C1 2007 Q2 [3]}}
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Q1 3 Q2 3 Q3 2 Q4 3 Q5 4 Q6 4 Q7 3 Q8 5 Q9 4 Q10 5 Q11 12 Q12 12 Q13 12