CBSE Board Students Helpline

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CBSE Board Class IX Science (Physics) Solutions of NCERT Exercise  Questions Chapter 8, MOTION Important Exercise Questions Solved Q.1: An athlete completes one round of circular track of diameter 200 m in 40 sec. What will be the distance covered and the displacement at the end of 2 minutes 20 sec?  Ans: Time taken = 2 min 20 sec = 140 sec. Radius, r = 100 m. In 40 sec the