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`        Please answer it fast. If possible please give diagram  `
one year ago

Arun
23353 Points
```							The ball is bit at x =0 y =1 m.slope of stair case of benches          =  increase in y / increase in x    =  height of step / width of stepThe line joining the feet of the benches is =  (y - 1) / (x - 110 )  = 1 / 1  y = x - 109     - - equation 1Equation of trajectory of cricket ball is : x = u cos Ф tt = x / u cos Фy  = u sinФ t - 1/2  g  t²    = x tan Ф -  g x² / ( 2 u² cos² Ф )y  =   1.327 x  -   9.8 * x² / (2 *35² * 0.362 )        =  1.327 x  -  0.011 x²    ---- equ 2 substitute y from equation  1x - 109 =1.327 x - 0.011 x²0.011 x² - 0.327 x - 109 = 0Δ = 4.9x =  (0.327 +- 2.21 )/2*0.011  x =  115.32  metersy at 115.32 m   =  115.32 - 109 = 6.32 metersSo it is the 6th bench,  as 1st bench is from 110m to 111m,   6 th bench is from 115 m to 116m.Height y  Back rest of the First bench is from  1 to 2 m  ,             back rest of the sixth bench is 6 to 7 meters high6th bench
```
one year ago
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