| Exam Board | OCR |
|---|---|
| Module | M1 (Mechanics 1) |
| Year | 2009 |
| Session | June |
| Marks | 9 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Projectiles |
| Type | Basic trajectory calculations |
| Difficulty | Moderate -0.8 This is a straightforward three-part kinematics question using standard SUVAT equations with constant acceleration. All parts require direct application of memorized formulas (v² = u² + 2as for parts i and ii, v = u + at for part iii) with no problem-solving insight or multi-step reasoning. The calculations are simple and the question type is a textbook exercise that students practice repeatedly. |
| Spec | 3.02d Constant acceleration: SUVAT formulae3.02h Motion under gravity: vector form |
An object is projected vertically upwards with speed $7$ m s$^{-1}$. Calculate
\begin{enumerate}[label=(\roman*)]
\item the speed of the object when it is $2.1$ m above the point of projection, [3]
\item the greatest height above the point of projection reached by the object, [3]
\item the time after projection when the object is travelling downwards with speed $5.7$ m s$^{-1}$. [3]
\end{enumerate}
\hfill \mbox{\textit{OCR M1 2009 Q4 [9]}}