A train travels the first 15 km at a uniform speed of 30km/h, next 10 km at a uniform speed - Science - Motion

Question

A   t r a i n   t r a v e l s   t h e   f i r s
t   15   k m   a t   a   u n i f o r m
  s p e e d   o f   30 k m / h ,   n e x t
  10   k m   a t   a   u n i f o r m
  s p e e d   o f 20 k m / h r   a n d   f i n
a l   75   k m   a t   a   u n i f o r m
  s p e e d   o f   50   k m / h e   T h e
  a v e r a g e   s p e e d   f o r   t h e
  e n t i r e   j o u r n e y   o f   t h e
  t r a i n   i s 1 )   40   k m / h  
                 
                 
                 
                 
                  2 )
  50 k m / h 3 )   40 m / s        
                 
                 
                 
                 
                  4 )
  50 m / s

Pintu B. · Accepted Answer

Dear Student ,
Here is a link which will help you to solve this question with
proper explanation

https://www meritnation
com/ask-answer/question/a-train-travels-the-first-15-km-at-a-uniform-speed-of-30k/motion/4830711

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