Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
?
? asked in Science & MathematicsMathematics · 2 years ago

Can anyone help me understand question b?

Attachment image

4 Answers

Relevance
  • Anonymous
    2 years ago

    44cm = 0.44m

    The ruler falls a distance 0.44m while you are reacting (which takes time t).

    From part a) we know t = √(d/4.9). So we substitute d=0.44

    t = √(0.44/4.9) = √0.0898 = 0.30s to 2 sig. figs.

  • Φ² = Φ+1
    Lv 7
    2 years ago

    2d/(9.8) = d/(4.9)

    Coincidentally (but not relevant) is 2d/(9•8) = d/(4•9) = d/36 where • is for scalar multiplication.

  • TomV
    Lv 7
    2 years ago

    They are asking how long it takes the ruler to fall a distance of 44 cm from a rest position. The question has been asked and answered. See the source link

    Source(s): /question/index?qid=20190...
  • alex
    Lv 7
    2 years ago

    b/

    d=0.44

    t = 0.3 sec

Still have questions? Get your answers by asking now.