Q1 of 53 Page 205

If the distance-time graph of a particle is parallel to time axis, then how much is the velocity of the particle?

displacement-time-graph-1.JPG


The velocity of the particle will be zero because the distance is constant and the time is increasing and this will happen only when the particle is stationary.


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4

(i) Give two factors on which acceleration depends.

(ii)Mention the formula and SI unit of acceleration.

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Fill in the blanks.

(i) ………..is the term used for negative acceleration.


(ii) A bus starting from rest attains a velocity of 54 km/h in 60 s, its acceleration is …………….. .

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In the figure below is shown the time-distance graph of cyclist.


Find out from the graph average speed in the whole journey.

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Give one similarity and one dissimilarity between the two graphs: