Investigating a Physics Phenomenon - MTC LAB BACKGROUND: We can often find useful, interesting day-to-day occurrences to help us understand topics in science. We will design and build a mouse-trap car to help us understand the concepts of momentum and impulse. GOALS (You will work with your group to construct an appropriate 'purpose' statement based on the following goals): (*) Construct a mtc with some sort of airbag model (*) The force experienced by that mtc in a collision with a wall from 2.0 meters should be as low as possible (*) Work to minimize or eliminate the recoil (bounce-back) after the mtc impacts the wall MODEL DAY #1: Build your car. MODEL DAY #2: Work with your group to re-familiarize yourself with the principles of impulse-- particularly in how impulse relates to vehicle airbags. Pay particular attention to the importance of FORCE in such cases. Begin testing your data collection methods using our LabQuests MODEL DAY #3: Prelab Begin writing your purpose, materials, methods and construct an appropriate data table. You do NOT have to list all the materials that make up a mouse trap car that came from the kit-- just indicate the name of the kit and manufacturer of that kit. If you already listed ALL of those, no worries. You DO need to indicate any materials that you added to your mtc Be thinking ahead about the sort of data you are likely to see: The Labquest motion sensors send out 'chirps' every .05 seconds. That means you'll get a strem of 20 data points every second You will likely have to make certain estimates if your key events don't precisely fall during those .05 second increments How will you use the impulse formula (F∆t = ∆p = mfvf-mivi) to determine the force experienced by your mtc during impact? Finalize your data collection methods. I particular, make sure you can analyze "crash" data to determine: 1) initial velocity (just as the 'airbag' first hits the wall) 2) final velocity (just as the 'airbag' is at its greatest compression 3) ∆t (the time for steps 1 - 2 above) 4) Do you need to measure acceleration? If so, use our small accelerometers concurrently with the LabQuests Motion sensors provide time, displacement (shown as "position" on the device) and velocity. The motion sensors also show acceleration data but it is highly unreliable. Accelerometers measure time and acceleration only; but have the advantage of being very light and portable and send data directly to your chromebooks CONCEPTS INVOLVED: Force (F) (measured in Newtons) Impulse (J) (CHANGE of momentum) Momentum (p) (measured in kilograms-meters/second) Time (t) (measured in seconds) Velocity (v) (measured in meters/second) My Black Hen Lays Eggs In the Relative When She Won't Lay Them Here in the PROBABLE NOW Because she's unable to postulate how!