What is the speed of a car going v=1.000 mile per hour in SI units? You can do each conversion separately. Use the facts that 1mile=1609 meters and 1hour=3600 seconds. Express your answer in meters per second to four significant figures.

Okay first I set the problem to the right conversions. I do this

$(1000 miles / 1 hour)$ * $(1609 meters / 1 miles)$ * $ *(1hour/ 3600 seconds)$

Thus I get 446.9 m/s however this is not the right answer. I could use some guidence towards where I went wrong.


closed as off-topic by tpg2114, Brandon Enright, Jim, dmckee Aug 31 '14 at 0:40

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  • 1
    $\begingroup$ Is the car going 1.000 miles per hour or 1,000 miles per hour? There's an odd decimal point in the first sentence. $\endgroup$ – HDE 226868 Aug 30 '14 at 19:19
  • $\begingroup$ Perhaps this is why I got the problem wrong let me revaluate the problem. $\endgroup$ – Jon Aug 30 '14 at 19:22
  • $\begingroup$ Well, first, what is the correct answer? $\endgroup$ – HDE 226868 Aug 30 '14 at 19:22
  • $\begingroup$ The correct answer is .4469 m/s $\endgroup$ – Jon Aug 30 '14 at 19:25
  • 1
    $\begingroup$ So that might be the issue, then. $\endgroup$ – HDE 226868 Aug 30 '14 at 19:26

$(1.000 miles / 1 hour)$ * $(1609 meters / 1 miles)$ * $ *(1hour/ 3600 seconds)$ Thus $.4469$ meter/second$


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