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ICSE Class 9 Answered

A body moving from rest with uniform acceleration Travels a distance x in first t seconds and travels a distance Y with same acceleration in next 2 seconds find the value of Y  
Asked by Kanwaranita10 | 07 Apr, 2018, 12:07: PM
answered-by-expert Expert Answer
begin mathsize 12px style L e t space a space i s space t h e space a c c e l e r a t i o n space f o r space t h e space d i s tan c e space t r a v e l l e d space x space i n space t space s e c o n d s. t h e n space x space equals space 1 half a t squared space semicolon space h e n c e space a space equals space fraction numerator 2 x over denominator t squared end fraction v e l o c i t y space a f t e r space t space s e c o n d s space i s space equals space fraction numerator 2 x over denominator t squared end fraction t space equals space fraction numerator 2 x over denominator t end fraction d i s tan c e space t r a v e l l e d space Y space i n space n e x t space t w o space s e c o n d s space w i t h space s a m e space a c c e l e r a t i o n space i s Y space equals space fraction numerator 2 x over denominator t end fraction 2 space plus space 1 half fraction numerator 2 x over denominator t squared end fraction 4 space space equals space fraction numerator 4 x over denominator t end fraction space plus space fraction numerator 4 x over denominator t squared end fraction space equals space fraction numerator 4 x over denominator t end fraction open parentheses 1 plus 1 over t close parentheses end style
Answered by Thiyagarajan K | 07 Apr, 2018, 05:40: PM

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