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Chapter 13 Motion and Time Solutions

Question - 11 : - Suppose the two photographs, shown in fig. 13.1 and fig. 13.2 of NCERT had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the blue car.

Answer - 11 : - 0.1 cm/s or 10 m/s

Question - 12 : - Fig 13.10 shows the distance-time graph for the motion of two vehicles A and B. Which one of them is moving faster?

Answer - 12 : - ‘A’ is moving faster.

Question - 13 : - Which of the following distance-time graphs shows a truck moving with speed which is not constant?

Answer - 13 : -

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