Presentation on theme: " Use marble & steelie instead of plastic ball & bocce ball. Make a track using meter sticks. You will only need 1 clamp. Clamp the 1“ block on top."— Presentation transcript:
Use marble & steelie instead of plastic ball & bocce ball. Make a track using meter sticks. You will only need 1 clamp. Clamp the 1“ block on top of the 2-meter stick track. You only need to clamp 1 end of the track. Make motion in the direction of the clamp/block which will act as a stop. Add a step b4 step 1. Make a statement about the relative mass of the marble & steelie. Try trial where you vary speed. Don’t get too carried away.
Purpose, data, conclusion Purpose: to observe & analyze the collision of a marble & a steelie. Data – an enumerated list of observations. Conclusion – enumerate & answer the 2 analysis questions & the critical thinking question.
To the equipment list - Add balance & change 2 meter sticks to 4. Key to lab for each trial is to have the carts collide with the barrier simultaneously. Initial P needs to be in the data table. One of the 2 final momenta should be neg. 3 trials 1) empty/empty; 2) empty/loaded; loaded/loaded. Measure distance from back of carts. What will be the units of P for this lab? Use 1 st notch of the plunger. (shortest notch) (show them) The carts do not necessary need to be in contact. (show them explain why – bc of unlevel table carts may want to roll.)
Lab Report: Purpose; data table(s); Conclusion Conclusion: 1. Derive the formula V 1 /V 2 = d 1 /d 2 2. In what units did you measure P in? 3. What statement can you make about the total P of the 2 carts b4 & after the explosion? 4. What is the total P 2 min. after the explosion? Is this observation consistent with above statement? Explain.
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