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19 October, 17:04

While John is traveling along a straight interstate highway, he notices that the mile marker reads 252 km. John travels until he reaches the 134 km marker and then retraces his path to the 163 km marker. What is John's resultant displacement from the 252 km marker? Answer in units of km.

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  1. 19 October, 17:10
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    total distance is 147 km

    and john displacement is = 89 km

    Explanation:

    given data

    mile marker = 252 km

    reach = 134 km

    retrace path = 163 km

    to find out

    resultant displacement

    solution

    we know here john travel from 252 km mark

    and he reach at 134 km

    so he travel distance part1 = 252 - 134

    distance d1 = 252 - 134 = 118 km ... 1

    and

    then he start travel from 134 km mark upto 163 km mark

    so distance travel in part 2 is

    distance d2 = 163 - 134 = 29 km ... 2

    so total distance is 118 + 29 = 147 km

    and john displacement is = 252 - 163 = 89 km
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