Collisions in 2 DimensionsToday were are learning about collisions in 2-dimensions. Of course momentum in conserved in all three independent spatial dimensions. So, you can break the momentum of the individual objects into x, y, and even z components and conserve energy in these three directions to solve the problems. No new physics here, just slightly more complicated problems. Random Example Problem - not mine...
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Today we are solving problems that involve conservation of energy and momentum calculations. Examples of this are the the "ballistic pendulum"
A continuation of our work with momentum conservation and completing the worksheet that was handed out to you last week.
Today we are solving elastic collision problems where the final speeds of the two objects are unknown. We will have to look at writing equations for MOMENTUM CONSERVATION and KINETIC ENERGY CONSERVATION. Writing this two equations and doing the substitution will give you the solutions for both the initial and final conditions. You can also put this into Wolfram Alpha to get the solutions. Practice both!!
Conservation of Linear Momentum InvestigationToday you will go online and use the online applet provided to investigate the momentum changes that occur when two (or more) objects collide with one another. You can get to the applet from: Online Collision Applet
Momentum-Impulse TheoremToday we are finishing up the worksheets that were handed out on Friday and starting an extension of the theorem using Integral Calculus. For more information click here. Example: if the time-variant force is F(t) = t^2+2t+6 and you want to know the impulse (momentum change from t=1 to t=4 seconds we must integrate F(t) from 1 to 4 Notice that the area from 1 to 4 is the impulse. You can estimate it right from the graph without even doing the "calculus."
Momentum-Impulse Theorem
Today is the dynamics test; good luck! Test overall was well done; I am working on finishing the marking and will hopefully have it back tomorrow - or Monday at the latest.
Introduction to MomentumToday we will do a short lesson about the basics of momentum. What is it? How can it be calculated?
Dynamics in 2D - More Complex Dynamics ProblemsOver the next few days we will be working on the following sheets (examples and problem sets). This will lead up to the test evaluation for this mini-review-unit.
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