| Exam Board | AQA |
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| Module | Paper 2 (Paper 2) |
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| Year | 2023 |
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| Session | June |
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| Topic | Newton's laws and connected particles |
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14 A car has an initial velocity of \(1 \mathrm {~ms} ^ { - 1 }\)
A particle, \(Q\), moves in a straight line across a rough horizontal surface.
A horizontal driving force of magnitude \(D\) newtons acts on \(Q\)
\(Q\) moves with a constant acceleration of \(0.91 \mathrm {~ms} ^ { - 2 }\)
\(Q\) has a weight of 0.65 N
The only resistance force acting on \(Q\) is due to friction.
The coefficient of friction between \(Q\) and the surface is 0.4
Find \(D\)