| Exam Board | AQA |
|---|---|
| Module | M2 (Mechanics 2) |
| Year | 2016 |
| Session | June |
| Marks | 8 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Work done and energy |
| Type | Projectile energy - basic KE/PE calculation |
| Difficulty | Moderate -0.8 This is a straightforward energy conservation problem requiring only standard formula application: KE = ½mv², PE = mgh, and conservation of mechanical energy. All steps are routine M2 techniques with no problem-solving insight needed, making it easier than average but not trivial due to the multi-step nature and 8 total marks. |
| Spec | 6.02d Mechanical energy: KE and PE concepts6.02e Calculate KE and PE: using formulae6.02i Conservation of energy: mechanical energy principle |
A stone, of mass $0.3$ kg, is thrown with a speed of $8 \text{ m s}^{-1}$ from a point at a height of $5$ metres above a horizontal surface.
\begin{enumerate}[label=(\alph*)]
\item Calculate the initial kinetic energy of the stone.
[2 marks]
\item \begin{enumerate}[label=(\roman*)]
\item Find the kinetic energy of the stone when it hits the surface.
[3 marks]
\item Hence find the speed of the stone when it hits the surface.
[2 marks]
\item State one modelling assumption that you have made.
[1 mark]
\end{enumerate}
\end{enumerate}
\hfill \mbox{\textit{AQA M2 2016 Q1 [8]}}