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CBSE Class 9 Answered

A body moves from point O to point A, and then to point B (to the east of O) in 5 s. What is the average speed and average velocity of the body?     
Asked by Topperlearning User | 10 Jun, 2016, 09:45: AM
answered-by-expert Expert Answer

begin mathsize 12px style Average space speed equals fraction numerator Total space distance over denominator Total space time end fraction rightwards arrow space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator left parenthesis 4 space plus space 5 space straight m right parenthesis space over denominator 5 space straight s end fraction rightwards arrow Average space speed equals 1.8 space straight m divided by straight s Average space velocity equals fraction numerator Total space displacement over denominator Total space time end fraction rightwards arrow space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 7 space straight m over denominator 5 space straight s end fraction rightwards arrow Average space velocity equals 1.4 space straight m divided by straight s space left parenthesis to space the space east space of space point space straight O right parenthesis space space space space end style

 

Answered by | 10 Jun, 2016, 11:45: AM

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