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7 June, 20:34

A cyclist rides her bike at a speed of

2

meters per second. What is this speed in kilometers per hour? How many kilometers will the cyclist travel in

4

hours? Do not round your answers.

+4
Answers (2)
  1. 7 June, 21:47
    0
    Alrighty 2 m/s

    (2m/s) X (1 km / 1000 m) X (60s / 1 min) X (60 min / 1 hr) = 7.2 km/hr

    Part B:

    7.2 X 4 = 28.8

    Basically what I am doing is canceling out terms and replacing them with the terms I want. for example: I need to convert meters into kilometers. In my given (2 m/s) meters is on the top and my answer requires that I have km on the top. SO to convert meters into kilometers I have to put meters on the bottom and kilometers on the top.

    Hence, why I put (1 km / 1000 m) km on top (like I want and m on bottom to cancel m). I did the same thing with converting seconds into hours.
  2. 8 June, 00:30
    0
    OK so basically when converting 2 meters per second to kilometers per hour you will get 7.2 kilometers per hour. OK so times that by 4 and you will get 28.8 kilometers in 4 hours.
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