-
CBSE 9th Physics | Motion – Solved Problems
Motion – Solved Problems Problem 1. A car covers the 1st half of the distance between two places at a speed of 40 km/hr and the 2nd half at 60 km/hr what is the average speed of the car ? Solution. Suppose the total distance covered is S. Then time taken to cover first’s distance…
-
CBSE 9th Physics | Motion: Concepts
Motion: Concepts Concept Review REST An object is said to be at rest if it does not change its position with respect to its surroundings with the passage of time. MOTION A body is said to be in motion if its position changes continuously with respect to the surroundings (or with respect to an observer)…