| Exam Board | AQA |
|---|---|
| Module | Paper 2 (Paper 2) |
| Year | 2018 |
| Session | June |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | SUVAT in 2D & Gravity |
| Type | Vertical motion: velocity-time graph |
| Difficulty | Standard +0.3 This is a standard kinematics graph question requiring students to find acceleration from gradient and use area under velocity-time graph to find displacement. Part (a) is straightforward gradient calculation. Part (b) requires finding when net displacement is zero by calculating areas, which is routine A-level mechanics but involves some careful arithmetic across multiple sections. |
| Spec | 3.02b Kinematic graphs: displacement-time and velocity-time3.02c Interpret kinematic graphs: gradient and area |
| Answer | Marks |
|---|---|
| 12(a) | Finds the steepest gradient. |
| Answer | Marks | Guidance |
|---|---|---|
| Do not allow -4. | AO1.1b | B1 |
| Answer | Marks |
|---|---|
| 12(b) | Shows evidence of determining |
| Answer | Marks | Guidance |
|---|---|---|
| indication on a diagram | AO3.1b | M1 |
| Answer | Marks | Guidance |
|---|---|---|
| 1 | AO2.2a | A1 |
| Answer | Marks | Guidance |
|---|---|---|
| indication on a diagram | AO1.1a | M1 |
| Answer | Marks | Guidance |
|---|---|---|
| 2 | AO2.2a | A1 |
| Total | 5 | |
| Q | Marking Instructions | AO |
Question 12:
--- 12(a) ---
12(a) | Finds the steepest gradient.
Ignore units.
Do not allow -4. | AO1.1b | B1 | 4 m s-2
--- 12(b) ---
12(b) | Shows evidence of determining
areas above and below the time
axis for values of t between 7 and 9
inclusive
Evidence may include values or
indication on a diagram | AO3.1b | M1 | t 8
1
t 14.25
2
Deduces t value correctly.
1 | AO2.2a | A1
Shows evidence of determining
areas above and below the time
axis for values of t between 13 and
15 inclusive
Evidence may include values or
indication on a diagram | AO1.1a | M1
Deduces t value correctly
2 | AO2.2a | A1
Total | 5
Q | Marking Instructions | AO | Marks | Typical SolutionThe graph below shows the velocity of an object moving in a straight line over a 20 second journey.
\includegraphics{figure_4}
\begin{enumerate}[label=(\alph*)]
\item Find the maximum magnitude of the acceleration of the object.
[1 mark]
\item The object is at its starting position at times 0, $t_1$ and $t_2$ seconds.
Find $t_1$ and $t_2$
[4 marks]
\end{enumerate}
\hfill \mbox{\textit{AQA Paper 2 2018 Q12 [5]}}