(a)[2]
Calculate the driving force for an acceleration of $0.5\,\text{m s}^{-2}$.
(b)[2]
Calculate the power needed for the minibus to keep a constant speed of $25\,\text{m s}^{-1}$.
Mathematics 9709 · AS & A Level · Energy, work and power
Energy, work and power — practice question
A minibus with mass $4000\,\text{kg}$ is moving along a straight horizontal road. The resistive force is $900\,\text{N}$.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$F - 900 = 4000 \times 0.5$ (Newton’s second law used, 3 terms)” …
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