The following is the time-distance graph of Sneha’s walking.

(a) When does Sneha make the least progress? Explain your reasoning.
(b) Find her average speed in km/hour.

Solution:

(a) Sneha makes the least progress in the time interval between 25 minutes to 40 minutes as it covers 0.25 km in 15 minutes.

(b) Sneha’s average speed is 2/[55/60) = 120/55 = 24/11 = 2.18 km/hour

✦ Try This: The following is the time-distance graph of Sneha’s walking.

(a) When does Sneha make the least progress? Explain your reasoning.

(b) Find her average speed in km/hour.

(a) Sneha makes the least progress between 50 minutes and 80 minutes. In 30 minutes Sneha covers the least distance of 0.5 km.

(b) The average speed of sneha = 4/[110/60] = 24/11 = 2.18 km/hour

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 15

NCERT Exemplar Class 8 Maths Chapter 12 Problem 65

The following is the time-distance graph of Sneha’s walking. (a) When does Sneha make the least progress? Explain your reasoning. (b) Find her average speed in km/hour.

Summary:

The graph presented in the solution above presents the distance-time graph of Sneha’s walking. Sneha’s average speed is 2.18 km/hour.

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