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# Form 2 Mathematics Video Questions and Answers on Linear Motion

The figure below shows a velocity-time graph of a particle moving along a West-East straight line, with velocity considered positive eastwards.

Use the graph to answer the following questions:
(a) Find the velocity of the particle:
(i) after 5 seconds.
(ii) after 15 seconds.
(iii) after 20 seconds.
(iv) after 40 seconds.
(b) Find the acceleration of the particle:
(i) during the first 5 seconds.
(ii) during the 15^(th second of the motion.
(iii) between the 18^(th and the 20^(th second.
(iv) between the 37^(th and the 41^(st second.
(c) Use area under the graph to find the distance covered by the particle:
(i) between the 10^(th and the 15^(th second.
(ii) between the 25^(th and the 35^(th second.
(iii) between the 20^(th and the 25^(th second.
(d) Find the average velocity:
(i) during the period from the 10^(th to 15^(th second.

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