Question

A car go S2 distance in V1 velocity and go S2 distance in V2. What is the car speed​

Answer 1

Answer:

V₁ V₂ ( S₁ + S₂ ) / ( S₁V₂ + S₂V₁ )

Explanation:

In first go :

   Distance = S₁

   Velocity = V₁

Thus,

       Time = Distance / speed

       Time = S₁ / V₁

In second :

   Distance = S₂

   Velocity = V₂

 Time = Distance / speed

           = S₂ / V₂

  Now,

total distance covered = S₁ + S₂

total time taken = ( S₁ / V₁ ) + ( S₂ / V₂ )

 Hence,

Speed = [ total distance / total time ]

  = [ S₁ + S₂ ] / [ ( S₁ / V₁ ) + ( S₂ / V₂ )

  = V₁ V₂ ( S₁ + S₂ ) / ( S₁V₂ + S₂V₁ )