out of 20 Assignment: Collisions Imagine you are playing | billiards . When you strike the cue ball, you give it a velocity greater than zero, and thus a momentum greater than zero. The other balls are not moving, so they have a momentum of zero. If the cue ball hits the orange ball, for example, both balls will have a different momentum after they collide, with the orange ball now having a velocity and a momentum greater than zero. Now imagine that when you take the n results in many of the billiard balls rolling around the table at different sp ctions - resulting in balls with different momentum. Often they will o t which point their velocities will change. Thus, their momentum will c In this assignment, you will investigat n momentum and elasticity. Instructions Your task is to plan and conduct a simple experiment that attempts to answer the testable question. First propose a hypothesis, then design and execute your experiment. Once you have collected train data Andlimon it and an sriniants inlin findings in the farm of a lah ranartInstructions Your task is to plan and conduct a simple experiment that attempts to answer the testable question. First propose a hypothesis, then design and execute your experiment. Once you have collected your data, analyze it and communicate your findings in the form of a lab report. Testable Question How does a change in elasticity affect the momentum of two objects involved in a collision? Based on the testable question provided, match the independent, dependent, and control variables. Independent G Ll]; (ii Mass Dependent 0 d? - ? Momentum Control 0 (3:) (:[L) Elasticity Guiding Questions v Hypothesis Propose a hypothesis based on the testable question. Make sure to support your hypothesis with Guiding Questions A The following questions are intended to guide your thinking toward concepts and ideas related to the topic of collisions. 1. What are elastic and inelastic collisions? 2. What is the relationship between momentum and kinetic energy? How are they related to collisions? 3. What is the Law of Conservation of Energy? How might it apply to your planned experiment? Hypothesis Propose a hypothesis based on the testable question. Make sure to support your hypothesis with scientific rationale. Simulation Select the link to access the simulation. 0 PhET Simulation: Collision Lab 'anv;nn+;nn II-n II-Ln o;m111n+-:An Navigating to the Simulation When the link opens, you will see the following landing page (Figure 1). Take a few minutes to explore the Intro simulation, noting the different settings and variables. Once you are familiar with the simulation, design your experiment to address the testable question. You must use the Explore 1D or Explore 2D simulations (or both) for your experiment. Do not plan your experiment using only the Inelastic simulation. Collision Lob You can access the other simulations by either returning to the landing page and selecting your preferred option (Figure 2) or by selecting it from the navigation bar at located at the bottom of the simulation (Figure 3). Balls Velocity 2 Momentum O c Collision Lab O# OK O Values Reflecting Border O Path Elasticity 100% O Constant Size Intro Explore 2D Inelastic 0.00 s G + Momenta Diagram Slow More Data Position (m) Momentum (kg m/s) Explore 1D Mass (kg) Velocity (m/s) Px 1 0.50 -1.00 0.00 1.00 0.30 0.50 0.15 2 1.50 0.00 0.50 -0.50 -0.50 -0.75 -0.75 O PHET : Collision Lab explore 1D Explore 20 PHET : Figure 2 Figure 3 Recommended Settings You can adjust the settings to reflect the your designed experiment. It is recommended that you remove the Reflecting Border and select More Data (Figure 4).Recommended Settings You can adjust the settings to reflect the your designed experiment. It is recommended that you remove the Reflecting Border and select More Data (Figure 4). _ Velocity Momentum 0.5 m O Center of Mass Balls Kinetic Energy 24 Values Reflecting Border Elasticity 100% nelastic Elastic Constant Size 0.00 s C Normal O Slow + Momenta Diagram More Data Mass (kg) Position (m) Velocity (m/s) Momentum (kg m/s) Px 1 0.50 -1.70 1.00 0.50 2 1.50 0.00 -0.50 0.75 CFigure 4 Materials Although you are using a simulation, you still need to prepare a list of materials. Similar to 1hands- on' activities, list all the necessary materials needed for someone to recreate the experiment. Do not list the simulation as a material item in your lab report. Note In this simulation, the elasticity of the collision is controlled by the slider in the settings menu. In reality, the elasticity of a collision (e.g. 100% elastic vs. 50% elastic vs. 100% inelastic) is based on the amount of kinetic energy lost. This is affected by the environment and the type of objects colliding. For example, compare the kinetic energy loss of a collision between two soft balls versus two hard billiard balls: the soft balls will lose more kinetic energy due to deformation compared to the hard billiard balls. With this in mind, be sure to describe the objects that you're colliding in terms of their mass and hardness for each collision you simulate. This is in addition to the other materials you need to measure momentum. Procedure For this activity, you must design your own procedure to address your testable question. Procedure For this activity, you must design your own procedure to address your testable question. Design your procedure as a controlled experiment. Write your procedure with enough detail that a person could take your procedure and replicate your results. Make sure to explain exactly how to measure and collect your data from the experiment. Common Misconception Your procedure must contain enough detail so that another person could use it to replicate your results. Note that the standard is to replicate the results and not simply to repeat the experiment. Communicating Your Results Once you have completed your test(s), communicate your results in a lab report. Use the information in the tabbed panels to help you prepare each section of your lab report. General 0 Your lab report must include the following headings: Testable Guidelines Question, Hypothesis, Materials, Observations, Results, Discussion, and Conclusion. Testable 0 Do not use the pronoun 'l' in a lab report. A Observations: Vector Diagrams For each collision, record your observations in the form of vector diagrams representing the scenario before (initial momentum) and after (final momentum) the collision. Include the following labels on the vectors: n- - initial momentum of object 1 Fm- - initial momentum of object 2 f1 - the total initial momentum of the system (i.e. the sum of in and g f1 f - final momentum of object 1 f2], - final momentum of object 2 if - total final momentum of system (i.e. the sum of fl]: and p31.) Assessment Details Your submission should include the following: C] Your completed lab report C] All vector diagrams illustrating the momentum of each object before and after each collision. C] All in-text citations and a reference list according to APA style for all sources used in your submission U All vector diagrams illustrating the momentum Of each object before and after each collision. O All in-text citations and a reference list according to APA style for all sources used in your submission Important Your lab report should include the following sections: Testable question Observations Hypothesis Results Materials Discussion Procedure Conclusion Upload your answers to the Assignment: Collisions Dropbox. Rubric Assignment: Collisions Rubric Submit this assignment to the dropbox. This assignment will be evaluated for a grade that will contribute to your overall final grade in this course