Describing Motion Around Us Class 9 Questions and Answers (Exercise) Revise, Reflect, Refine (NCERT Textbook Page No. 68) Question 1. My father went to a shop from home which is located at a distance of 250 m on a straight road. On reaching there, he discovered that he forgot to carry a cloth bag. He came home to take it, went to the shop again, bought provisions and came back home. How much was the total distance travelled by him? What was his displacement from home? Answer: The father travels between the home and the shop (250 m) four times: Home to Shop: 250 m Shop to Home: 250 m Home to Shop: 250 m Shop to Home: 250 m Total distance = 250+250+250+ 250 = 1000m. Since the starting point is home, and the final position is also home. Thus, displacement is 0 m. Question 2. A student runs from the ground floor to the fourth floor of a school building to collect a book and then comes down to their classroom on the second floor. If the height of each floor is 3 m, find: (i) the total verti...