Please help me on this question, i couldnt get it right, help me understand by explaining some of your answers.?

Two cars A and B have a velocity of 100kph in some direction. Car A is 35m behind car B, when the brakes are applied to car B causing it to decelerate at a rate of 4m/s^2 . In what time will car A overtakes car B? How far did car A has traveled ?

1 Answer

  • Anonymous
    1 month ago

    V*t = V*t-1/2a*t^2+35

    a*t^2 = 70

    t = √70/4 = 4.183 sec

    dA = V*t = 100/3.6*4.183 = 116.2 m

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