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  • An automobile traveling with a speed of 60 Km/h, can brake to stop within a distance of 20 m .If the car is going twice as fast i.e. 120 Km/h the stoping distance wil be,  <div c

An automobile traveling with a speed of 60 Km/h, can brake to stop within a distance of 20 m .If the car is going twice as fast i.e. 120 Km/h the stoping distance wil be,

 

Option: 1

20 m


Option: 2

40 m


Option: 3

60 m


Option: 4

80 m


Answers (1)

best_answer

Ist Case :
 
0=\left(\frac{50}{3}\right)^2-2 \mathrm{a} \times 20 \text {.....(i) } 
IInd Case :
 
0=\left(\frac{100}{3}\right)^2-2 \mathrm{ax} . . 
From (i) and (ii)
 
\mathrm{x}=80 \mathrm{~m} 

Posted by

sudhir.kumar

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