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calculusxy

  • one year ago

MEDAL Would it be possible to attain the average speed from problem 1 (answer is 2km/hr) and never exceed a reading of 70km/hr on the car's speedometer? Why or why not?

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  1. mathmath333
    • one year ago
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    what is prob 1

  2. calculusxy
    • one year ago
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    You walk across a room at a speed of 2 kilometers per hour. Write this speed using abbreviated units.

  3. mathmath333
    • one year ago
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    if the speedometer of car has the upper limit up to 70km, then not possible . if upper limit is greater than 70 km then possible

  4. mathmath333
    • one year ago
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    but m not sure.

  5. calculusxy
    • one year ago
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    @phi

  6. phi
    • one year ago
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    can you post the entire question including any background?

  7. calculusxy
    • one year ago
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    Problem 1 ------------- You walk across the room at a speed of 2 kilometers per hour. Write this speed using abbreviated units. Problem 4 -------------- Would it be possible to attain the average speed from problem 1 and never exceed a reading of 70km/hr on the car's speedometer? Why or why not?

  8. phi
    • one year ago
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    Do problems 2 or 3 talk about the car?

  9. phi
    • one year ago
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    what car are they talking about, and what is the car doing?

  10. calculusxy
    • one year ago
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    Well there was a problem for #3: If a car has traveled 35 km in half an hour, what is the average speed?

  11. calculusxy
    • one year ago
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    For that problem, I got 70km/hr?

  12. phi
    • one year ago
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    yes. #3 the car averages 70 km/hr over that 1/2 hour. To average 70 km/hr it either goes a steady 70 km/hr or it goes slower and then faster. But it is possible for it to go exactly 70 km/hr the entire 1/2 hour Now if the car stops for enough time, its average speed goes down. if it waits long enough its average speed will go down to 2 km/hr it can then start up and travel at 2 km/hr the rest of its journey.

  13. phi
    • one year ago
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    So I would say yes, the car could average 2 km/hour without exceeding 70 km/hr

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