Use this collision simulation activity to answer the questions below:

https://phet.colorado.edu/en/simulations/collision-lab

Run the collision lab app and complete the following. Record the necessary data in the table below. 1. In the green box on the right side of the screen, select the following settings: 1 dimension (Explore 1D), velocity vectors ON, kinetic energy ON, reflecting borders ON, elasticity 0%, and momenta diagram ON. Look at the red and green balls on the screen and the vectors that represent their motion. a. Which ball has greater velocity? b. Which has greater momentum? 2. Push "play" and let the balls collide. After they collide and you see the vectors change, click "pause". Click "rewind" and watch the momenta box during the collision. Watch it more than once if needed by using "play", "rewind", and "pause". Zoom in on the vectors in the momenta box with the control on the right of the box to make it easier to see if necessary. a. What happens to the momentum of the red ball after the collision? b. What about the green ball? c. What about the total momentum of both the red and green ball? 3. Now change the elasticity to 100%. Predict the motion of the balls after the collision. 4. Watch the simulation, and then pause it once the vectors have changed. a. What happens to the momentum of the red ball after the collision? b. What about the green ball? c. What about the total momentum of both the red and green ball?5. Experiment a little by running additional simulations. Record the following data for at least 2 additional simulations: Kinetic Kinetic energy of Change In Change In total Mass of Mass of Energy of the system kinetic energy momentum Red Ball Green Ball % Elasticity the system after during during (kg) (kg) before collision simulation? simulation? collision (yes or no) (yes or no)