car
А A
travels half the distance with constant
velocity
50 km/h and
40 kmph along straight line, find th

1 thought on “car<br />А A<br />travels half the distance with constant<br />velocity<br />50 km/h and<br />40 kmph along straight line, find th”

1. Answer:

   The answer will be 44.44 km/h.

   Explanation:

   Let the half distance be x.

   Velocity for first half distance = 50 km/h ;

   Velocity of car for another half distance = 40km/h;

   Time taken to travel first half of distance;

   = Time = Distance/speed;

   = x / 50 hours.

   Time taken to travel second half of distance;

   = Time = Distance/speed;

   = x / 40 hours.

   Now, average velocity is given by;

   = (Total Distance travelled) / (Total time taken);

   = (x + x) / {(x/50) + (x/40)};

   = 2x / (9x/200);

   = 2x * 200 / (9x);

   = 400x / 9x;

   = (400/9) km/h = 44.44 km/h.

   That’s all.

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