11/3/10

Post date: Nov 03, 2010 2:10:56 PM

Bell Ringer: Describe a situation in which you have done work.

    • Reminder: Rocket labs are due today

  • Notes - Work and Power

    • "Find your inner power" activity

      • Step up and down on a chair 10 times in a row while timing yourself.

      • To find work for 1 time up on the chair, use your weight as the force (1 lb = 4.45 Newtons) and the height of the chair as your displacement (measure in meters)

      • Multiply by 10 to find the work for 10 times.

      • Use P = W / t to find your power output

      • How many 60 W light bulbs could you power?

      • How many of you would it take to power an 88,000 Watt Honda Fit engine?

    • Page 199: 1-7, 9-11

  • Quiz 11 tomorrow - one problem on work, one on work at an angle, one on power