(Viva Voce) Chap 9 Exercise 9 Question 2





The solution:


a) 60km ÷ 3/4 h
  =80km/h


b)72km ÷ 1 1/3h
 =54km/h


c) Speed of Car X: Speed of Car Y
  =40:27




I failed. Epicly.

2 comments:

  1. My hand so shaky! :O

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  2. 1. You have explicitly tell us the need to convert the time to hour before finding the speed. And your explanation for the conversation is very clear. Simlarly, you have articulated the reason for converting the unit for part (b). Well done :)

    2. When finding the AVERAGE speed, need to say it's the TOTAL distance travelled divide by TOTAL time taken.

    3. The explanation for to simplify the ratio of the 2 speeds is also very clear. Good :)

    4. In the attempt to zoom in, the visual is shaky, and therefore becomes very distracting. Perhaps need not to zoom in that closely.

    Ishani, I don't understand why you ended your post with the words "I failed. Epicly."? Tell me more...

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