Total distance = 200 + 200 = 400 km and total time = 3 + 2 = 5 h. Average speed = 400/5 = 80 km/h. Since displacement is zero, average velocity = 0 km/h.
During a family road trip, you drive 200 km north in three hours. Afterwards, you drive 200 km south in two hours. Find the average speed and average velocity for your entire trip.
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The total distance travelled is 200 + 200 = 400 km, while the total time taken is 3 + 2 = 5 hours. Therefore, average speed = 400/5 = 80 km/h. Since the vehicle travels 200 km north and then 200 km south, it returns to the starting point. Hence, displacement is zero and average velocity = 0/5 = 0 km/h.
For more NCERT Solutions of Class 9 Science Exploration Chapter 4 Describing Motion Around Us Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-4/