PHYSICS

racing car accelerates uniformly. changes with following average speeds 20m/s for 2sec ;40m/sec for 2s and 60m/s for 6sec . what is overall average speed of car

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asked by AYESHA
  1. calculate distance
    20*2 + 40*2 + 60*6 =
    calculate time
    2+2+6

    av speed = distance/time

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    posted by Damon

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