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- calculusxy

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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- calculusxy

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- mathmath333

what is prob 1

- calculusxy

You walk across a room at a speed of 2 kilometers per hour. Write this speed using abbreviated units.

- mathmath333

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

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- mathmath333

but m not sure.

- calculusxy

- phi

can you post the entire question including any background?

- calculusxy

Problem 1
-------------
You walk across the room at a speed of 2 kilometers per hour. Write this speed using abbreviated units.
Problem 4
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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?

- phi

Do problems 2 or 3 talk about the car?

- phi

what car are they talking about, and what is the car doing?

- calculusxy

Well there was a problem for #3:
If a car has traveled 35 km in half an hour, what is the average speed?

- calculusxy

For that problem, I got 70km/hr?

- phi

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.

- phi

So I would say yes, the car could average 2 km/hour without exceeding 70 km/hr

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