1/12/11

Post date: Jan 12, 2011 2:3:43 PM

Bell Ringer: What is speed?

• • Factor-label for speeds

    • Speeds are always measured in (distance units) / (time units) (such as miles / hour or meter / second)

    • To convert these, simply convert either the distance or the time unit, then the other one

  • Be careful to place units correctly in conversion fractions that that unwanted units cancel

• Begin chapter 3 notes

• How fast can you moonwalk?

  • Make measurements of distance and time to calculate the speed at which you can moonwalk.

  • If you could moonwalk at that speed from here to the moon (a distance of 3.84403 x10^8 meters), how long would it take? Convert your answer from seconds to a reasonable unit for that time period.