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