Question

A car travel the half of the distance of its journey with speed of 40 km/h and second half of the distance with speed v.If average speed of car is 48km/h,then value of v is​

Answer 1

Answer:

ANSWER

Average velocity of car in case of equal displacement is given by   V  

avg

​  

=  

v  

1

​  

+v  

2

​  

 

2v  

1

​  

v  

2

​  

 

​  

 

Or    48=  

40+v

2×40×v

​  

 

Or   48×40+48v=80 v

⟹ v=60 km/hr

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Answer 2

2×40×v

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