February+3,+2009

Todays Topics (first 35 minutes)
Predict the average acceleration in each of the following situations. State what measurements and calculations you would use to test your predictions. a) A bullet travelling with a speed of 175 m/s is brought to rest by a wooden plank. b) A test car travelling at 88 km/h is brought to rest by a crash barrier consisting of sand-filled barrels.
 * Constant Acceleration Equations**
 * 1) Search the internet for the Constant Acceleration Equations
 * 2) use this [|online equation editor] to type up one of the equations you used.
 * 3) go to Constant Acceleration Equations and post your equation, estimate and explanation (with your name - you will not be able to post if you have not yet signed up for wikispaces).

If you want to review adding vectors take a look at this video. media type="youtube" key="pfmV2L-ZRRU" height="344" width="425"
 * Review Adding Vectors (Review from SPH3U)**

Describe how you would perform an experiment to determine the acceleration of a book sliding down an inclined slope. Which variables would you measure and how would you calculate the acceleration?
 * Homework:**

Email to Darren.W.Green@hwdsb.on.ca before class on Thursday.