| Exam Board | OCR MEI |
|---|---|
| Module | AS Paper 1 (AS Paper 1) |
| Year | 2018 |
| Session | June |
| Marks | 6 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Constant acceleration (SUVAT) |
| Type | Average speed or total distance calculation |
| Difficulty | Standard +0.3 This is a straightforward two-stage kinematics problem requiring SUVAT equations to find the velocity after acceleration, then applying Newton's second law with the work-energy principle or SUVAT again to find resistance. Standard AS mechanics with clear structure and routine application of familiar techniques, making it slightly easier than average. |
| Spec | 3.02d Constant acceleration: SUVAT formulae3.03c Newton's second law: F=ma one dimension6.02d Mechanical energy: KE and PE concepts6.02i Conservation of energy: mechanical energy principle |
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Please provide the extracted mark scheme content that needs to be cleaned up, and I'll convert the unicode symbols to LaTeX notation, preserve the marking annotations, and format it clearly.7 A toy boat of mass 1.5 kg is pushed across a pond, starting from rest, for 2.5 seconds. During this time, the boat has an acceleration of $2 \mathrm {~m} \mathrm {~s} ^ { - 2 }$. Subsequently, when the only horizontal force acting on the boat is a constant resistance to motion, the boat travels 10 m before coming to rest. Calculate the magnitude of the resistance to motion.
\hfill \mbox{\textit{OCR MEI AS Paper 1 2018 Q7 [6]}}