Physics, asked by HARSHKUMARSINGH772, 1 year ago

A certain distance is covered at certain speed if of this distance is covered in double the time the ratio of


SaiSoumya: whats the ques?
badalhembrom198: 2:1
badalhembrom198: Let the distance be x and time be y.
badalhembrom198: Then speed=x/y
badalhembrom198: When time is doubled speed = x/2y.
badalhembrom198: Ratio =( x/y)÷(x/2y)
badalhembrom198: That is 2:1

Answers

Answered by Anonymous
2
Hi.

Here is the answer---

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Let the Original distance and the time to be covered be x km and y hr respectively.

In First Case,
  
  Using the Formula,

      Speed = Distance/Time
         Speed (v) = x/y


Now, In second Case,
   
     Time = 2 of Orginal
 ⇒ Time = 2y

Thus, New Speed(v₁)  = x/2y


∴ The Ratio between the Original and the New speed,
 
    \frac{v}{v1}   =   \frac{x/y}{x/2y}
              \frac{v}{v1}  =  \frac{2}{1}

Thus, v : v₁ = 2 : 1


Ratio between the Original and the New speed of the Object for the Certain distance is 2 : 1


_________________


Hope it helps.


Have a Nice day.
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