| Exam Board | Edexcel |
|---|---|
| Module | AS Paper 2 (AS Paper 2) |
| Year | 2024 |
| Session | June |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Forces, equilibrium and resultants |
| Type | Forces in vector form: resultant and acceleration |
| Difficulty | Moderate -0.3 This is a straightforward AS-level mechanics problem requiring vector addition of forces, application of F=ma, finding magnitude of acceleration vector, and solving a quadratic equation. All steps are standard procedures with no novel insight required, making it slightly easier than average. |
| Spec | 1.10d Vector operations: addition and scalar multiplication3.03d Newton's second law: 2D vectors3.03p Resultant forces: using vectors |
| Answer | Marks | Guidance |
|---|---|---|
| The trailer could be affected by any unevenness of the road e.g. potholes, bumps etc | B1 | Accept equivalent statements about road surface irregularities |
| Does not take account of the type of ground | B1 | Accept equivalent statements about ground type |
## Question 3:
*Correct answers (credit-worthy responses):*
The trailer could be affected by any unevenness of the road e.g. potholes, bumps etc | B1 | Accept equivalent statements about road surface irregularities
Does not take account of the type of ground | B1 | Accept equivalent statements about ground type\begin{enumerate}
\item \hspace{0pt} [In this question, $\mathbf { i }$ and $\mathbf { j }$ are perpendi cular unit vectors in a horizontal plane]
\end{enumerate}
A particle P is moving on a smooth horizontal surface under the action of two forces.\\
Given that
\begin{itemize}
\item the mass of P is 2 kg
\item the two forces are $( 2 \mathbf { i } + 4 \mathbf { j } ) \mathrm { N }$ and $( \mathbf { i } - 2 \mathbf { j } ) \mathrm { N }$, where C is a constant
\item the magnitude of the acceleration of P is $\sqrt { 5 } \mathrm {~m} \mathrm {~s} ^ { - 2 }$\\
find the two possible values of C .
\end{itemize}
\hfill \mbox{\textit{Edexcel AS Paper 2 2024 Q3 [5]}}