OCR MEI M1 — Question 5 3 marks

Exam BoardOCR MEI
ModuleM1 (Mechanics 1)
Marks3
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicSUVAT in 2D & Gravity
TypeFree fall: time or distance
DifficultyEasy -1.2 This is a straightforward one-step SUVAT problem requiring only the equation v² = u² + 2as with u=0, s=0.75m, a=9.8m/s². It's simpler than average A-level mechanics questions as it involves direct substitution into a single kinematic equation with no problem-solving or multi-step reasoning required.
Spec3.02d Constant acceleration: SUVAT formulae
5
An egg falls from rest a distance of 75 cm to the floor.
Neglecting air resistance, at what speed does it hit the floor?
Question 5:
Part (i):
AnswerMarks Guidance
AnswerMark Guidance
\(v^2 = 0^2 + 2 \times 9.8 \times 0.75\)M1 Use of \(v^2 = u^2 + 2as\) with \(u = 0\) and \(a = \pm g\). Accept muddled units and sign errors
A1Allow wrong or wrongly converted units not sign errors
\(v = \pm 3.8340\ldots\) so \(3.83\ \text{m s}^{-1}\) (3 s.f.)A1 cao \([SC2\) for \(38.3\ldots\) seen WWW and \(SC3\) for \(3.83\ldots\) seen WWW\(]\)
Total: 3 
## Question 5:

**Part (i):**

| Answer | Mark | Guidance |
|--------|------|----------|
| $v^2 = 0^2 + 2 \times 9.8 \times 0.75$ | M1 | Use of $v^2 = u^2 + 2as$ with $u = 0$ and $a = \pm g$. Accept muddled units and sign errors |
| | A1 | Allow wrong or wrongly converted units not sign errors |
| $v = \pm 3.8340\ldots$ so $3.83\ \text{m s}^{-1}$ (3 s.f.) | A1 | cao $[SC2$ for $38.3\ldots$ seen WWW and $SC3$ for $3.83\ldots$ seen WWW$]$ |
| **Total: 3** | | |

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5\\
An egg falls from rest a distance of 75 cm to the floor.\\
Neglecting air resistance, at what speed does it hit the floor?

\hfill \mbox{\textit{OCR MEI M1  Q5 [3]}}
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