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The speed-time graph for a car is shown is Figure <br> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_IX_V01_C01_S01_045_Q01.png" width="80%"> <br> (a) Find how far does the car travel in the first 4 seconds. Shade the area on the graph that represents the distance travelled by the car during this period. <br> (b) Which part of the graph represents uniform motion of the car ?

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Solution :
(a) <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_SCI_IX_C08_E01_035_S01.png" width="80%"> <br> The shaded area which is equal to `1//2xx4xx6=12` m represents the distance travelled by the car in the first 4s. <br> (b) <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_SCI_IX_C08_E01_035_S02.png" width="80%"> <br> The part of the graph in red colour between time 6 s to 10 s represents uniform motion of the car.

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