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anonymous

  • 5 years ago

I have designed a new automobile. It's super fast, and shaped like a gall blader. It is able to accelerate from 12 mph to 55 mph in precisely 35 seconds. Assuming constant acceleration, find the following: a) The acceleration in meters per second. b)The distance traveled by the car during those extreme 35 seconds.

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  1. anonymous
    • 5 years ago
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    hey, how's it going?

  2. anonymous
    • 5 years ago
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    Crappy on this problem...I'm completely stuck. I don't even know where to begin.

  3. anonymous
    • 5 years ago
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    is it meters per second or miles per hour?

  4. anonymous
    • 5 years ago
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    Letter a asks for meters per second per second...so I'm guessing per second squared? The actual speeds, mph in a matter of seconds. That's what I'm extremely confused on.

  5. anonymous
    • 5 years ago
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    mph in a matter of seconds?

  6. anonymous
    • 5 years ago
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    what units are the speeds they give you? miles per hour?

  7. anonymous
    • 5 years ago
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    The speeds are given in the units of miles per hour.

  8. anonymous
    • 5 years ago
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    that's a bummer. you're sure, right? and they don't give you some kind of conversion?

  9. anonymous
    • 5 years ago
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    It just tells me that it goes from 12-55 mph in 35 seconds. Then it says to find the acceleration in meters per second per second. I'm assuming that it expects us to convert on our own, but I'm not exactly sure how.

  10. anonymous
    • 5 years ago
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    ok well here's a good trick for that

  11. anonymous
    • 5 years ago
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    you want to get from miles per hour to meters per second

  12. anonymous
    • 5 years ago
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    right...

  13. anonymous
    • 5 years ago
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    what you do is miles/hour * (hour/3600 seconds)

  14. anonymous
    • 5 years ago
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    since you can always multiply by 1, that way you get rid of the hours in the denominator

  15. anonymous
    • 5 years ago
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    so then you multiply by ( x meters / miles) and hopefully you can figure out how many meters in a mile so i don't have to do it

  16. anonymous
    • 5 years ago
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    Do you eliminate mph by doing...12mi/h*h/3600sec?

  17. anonymous
    • 5 years ago
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    then multiply by x meters / miles whatever x is from the conversion

  18. anonymous
    • 5 years ago
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    This is what I did...12mi/hr*hr/3600 sec=12mi/3600sec*1609.344m/mi=12 1609.344m/3600sec...is this correct?

  19. anonymous
    • 5 years ago
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    Then you should simplify and get 1397meters/3125 sec

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