Question

2 ends of a train croses a point with velocity u and v respectively wiyh uniform accileration. prove that the velocity with which the middle part of the train cosses the same point is root of (u^2+v^2)÷2​

Answer 1

Answer:

Explanation:

Let  s be the length of train using v  2  =u  2  +2a×s  or2as=v  2  −u  

Where v is final velocity after travelling a distance s with an acceleration a and u is initial velocity as per question

Let velocity of middle point of train at same point is v ′ , then (v  ′  )  2  =u2 +2a×(s/2) =u  2  +as .....(2) ′  =  2 v 2 +u 2

 

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