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3 March, 07:51

A car traveling at 80 kilometers per hour is passed by a second car going in the same direction at a constant speed. After 30 seconds, the two cars are 500 meters apart. Find the speed of the second car.

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  1. 3 March, 09:22
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    = 38.89 m/s

    Explanation:

    speed of first car (u) = 80 km/h = 22.22 m/s

    time (t) = 30 s

    distance (d) = 500 m

    find the speed of second car (v)

    let the speed of the second car be represented as 'v'

    We can get the speed of the second car from the formula net speed = distance between cars / time interval

    where

    distance between cars = 500 m time interval = 30 s net speed = v-22.22 (since both cars move in the same direction) substituting the above into the formula we have

    v-22.22 = 500 / 30

    v = 500/30 + 22.22

    v = 38.89 m/s
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