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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…
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CBSE Physics Tutorials | Motion: Speed, Velocity and Acceleration
Motion: Speed, Velocity and Acceleration Speed: – Speed of a body is defined as the distance travelled by it per unit time. i.e hence S.I Unit of speed is metre /sec. (m /s or ms – 1) Uniform speed: If a moving body covers equal distances in equal interval of time, then the speed of…