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  • Initially a car at rest accelerates uniformly to a speed of 144 Km/h in 20 sec . Then it covers a distance of  Option: 1 20 m<b

Initially a car at rest accelerates uniformly to a speed of 144 Km/h in 20 sec . Then it covers a distance of
 

Option: 1

20 m


Option: 2

400 m


Option: 3

1440 m


Option: 4

12880 m


Answers (1)

best_answer

 

     

 

 

v = u+ at

a = v/t

a = 40/20 = 2 m/s 2

s = ut + 1/2 at^{2}

0+1/2\times 2\times \left ( 20 \right )^{2}

s= 400

 

 

Posted by

shivangi.bhatnagar

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