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How the length of the six is measured instantly in cricket? What technology do they use?

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2  
Good question, +1. –  Sports Fan May 21 at 6:42
    
by where is lands? –  aqwert Jun 27 at 5:07
    
You seem to be looking for official answers and formal references. Most people here would use Google to determine if these things exist, so maybe you could try that? –  TrueDub Jul 22 at 10:49

2 Answers 2

First they calculate the speed of the ball after hitting the bat taking distance as 22 yards (changing it into meters) and then record the time till the ball crossed the pitch by d=s/t then they record the time till the ball has stopped outside the playing area then again they calculate the distance by d=s/t . this is how it is calculated

(all calculations are based on the assumptions that speed of the ball remains the same )

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Any official reference? –  hims056 May 21 at 8:47
    
@MKR I am not satisfy with your answer. –  Meet Pandya May 22 at 8:59

Actually its a good question.I just find these answer with these reference.

I can present two different ways.

  • Based on the angle of hitting.

    using range of a projectile formula.

    R=v² Sin (2Θ)/g

    Where : v= velocity at time of hitting… 
    
    g= 9.8 m/s^2 
    
    Θ= Angle at which ball is hit.
    

    Ideal_projectile_motion_for_different_angles

  • Using initial velocity & acceleration of the ball

    S = ut + 0.5at²

    t = the time the ball stays in the air 
    u = initial velocity at which the ball left the bat (calculated like bowling speed) 
    a = 9.8 m/s^2 
    s= distance travelled by the ball
    
      It's broadcaster choice to use different scientific approaches to find the distance travelled by the ball.
    
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-1: Yahoo answers is not a reliable source, and although the equations given could be used, (preferably in a cricket ground with no air resistance), I doubt that they are. –  Fillet Jun 26 at 12:35
1  
Welcome to Sports.SE, Summarize the answer in your own words. Though this post is all about technology, you can provide your own words about what you had understand/know about that, since we discourage plagiarism here in Sports.SE. –  Sports Fan Jun 26 at 12:35

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