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anonymous

  • one year ago

help will give medal (01.03) A student runs 100 meters in 11 seconds. What is the speed of the student? speed = distance over time ; 1 mile = 1609 meters (2 points) 9.1 miles per hour 16 miles per hour 20.3 miles per hour 24 miles per hour

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  1. anonymous
    • one year ago
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    First, you're going to want to convert meters to miles, so you are working with the right distance measurement. 100 meters in equal to about 0.062 miles.

  2. anonymous
    • one year ago
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    Give me just a second.

  3. BearKolch
    • one year ago
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    d

  4. anonymous
    • one year ago
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    Alright, let's do this instead... Just plug in you're given values. Refer to that handy formula given to you. "speed = distance over time" which can also be written as s=d/t Since you're trying to find the runners speed, you would just fill in the appropriate variables with their values. His distance was 100, so d=100m His time was 11 seconds, so t=11s s=100/11 but now we have to convert...

  5. anonymous
    • one year ago
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    To convert meters to miles, you divide the amount of meters given (100) by the amount in a mile (1609). And convert seconds to hours, divide the amount of seconds given (11) by the amount in an hour (3,600). \[s = \frac{ \frac{ 100 }{ 1609 } }{ \frac{ 11 }{ 3600 } }\]

  6. anonymous
    • one year ago
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    Both numbers end up being a bit crazy... \[s=\frac{ 0.06215 }{ 0.00306 }\]

  7. anonymous
    • one year ago
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    s = 20.3

  8. anonymous
    • one year ago
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    20.3 mph is your final answer.

  9. anonymous
    • one year ago
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    oh ok I forgot the division thank you so much

  10. BearKolch
    • one year ago
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    (what i said)

  11. anonymous
    • one year ago
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    @BearKolch It is better for the asker if you show them how to get the answer rather than just giving it. Also, D would be 24 miles per hour not 20.3

  12. anonymous
    • one year ago
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    no @BearKolch you said D and 20.3 is C

  13. anonymous
    • one year ago
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    @shadow2239 You're welcome. :)

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