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CBSE Class 11-science Answered

Formula for average velocity= total Displacement/Total time. But when we calculate, why do we take difference of the two veolcities?(v2-v1/t2-t1)?? Total means they should be added, right?  
Asked by drhimasingh | 19 Jun, 2020, 09:56: PM
answered-by-expert Expert Answer
A v e r a g e space v e l o c i t y equals fraction numerator T o t a l space D i s p l a c e m e n t space over denominator T o t a l space t i m e end fraction
W h e r e a s space
A v e r a g e space a c c e l e r a t i o n equals fraction numerator C h a n g e space i n space v e l o c i t y space over denominator t o t a l space t i m e space end fraction
I f space v e l o c i t y space c h a n g e s space f r o m space V subscript 1 space t o space V subscript 2 space space i n space t i m e space i n t e r v a l space t subscript 1 t o space t subscript 2
A v e r a g e space a c c e l e r a t i o n space w o u l d space b e equals fraction numerator V subscript 2 minus V subscript 1 over denominator t subscript 2 minus t subscript 1 end fraction
Answered by Utkarsh Lokhande | 19 Jun, 2020, 10:20: PM
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