1 A ring is moving up and down a vertical pole. The displacement, \(s \mathrm {~m}\), of the ring above a mark on the pole is modelled by the displacement-time graph shown in Fig. 1. The three sections of the graph are straight lines.
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\includegraphics[alt={},max width=\textwidth]{bdbebc7f-0cb1-4203-8058-7614ba291508-1_763_1057_439_580}
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\caption{Fig. 1}
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- Calculate the velocity of the ring in the interval \(0 < t < 2\) and in the interval \(2 < t < 3.5\).
- Sketch a velocity-time graph for the motion of the ring during the 4 seconds.
- State the direction of motion of the ring when
(A) \(t = 1\),
(B) \(t = 2.75\),
(C) \(t = 3.25\).