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

Question

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

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Raelynn 3 months 2021-07-24T13:31:10+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-24T13:32:41+00:00

    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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