A-LevelMathematicsMechanicsMay/June 2023Paper 4 Q47 Marks
A lorry of mass 15000kg moves on a straight horizontal road in the direction from A to B. It passes A and B with speeds 20ms⁻¹ and 25ms⁻¹ respectively. The power of the lorry's engine is constant and there is a constant resistance to motion of magnitude 6000N. The acceleration of the lorry at B is 0.5 times the acceleration of the lorry at A.
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