A-LevelMathematicsMechanicsFeb/Mar 2021Paper 4 Q46 Marks
An elevator moves vertically, supported by a cable. The diagram shows a velocity-time graph which models the motion of the elevator. The graph consists of 7 straight line segments. The elevator accelerates upwards from rest to a speed of 2 m s¯¹ over a period of 1.5 s and then travels at this speed for 4.5 s, before decelerating to rest over a period of 1 s. The elevator then remains at rest for 6 s, before accelerating to a speed of V ms¯¹ downwards over a period of 2 s. The elevator travels at this speed for a period of 5 s, before decelerating to rest over a period of 1.5 s.
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