Collisions in 1 and 2 Dimensions

In today's lab period you will:

1. Use the MAP - Collision 1D applet and tutorial to investigate the role of energy in 1 dimensional collisions
2. Use the MAP - Collision 2D applet and tutorial to investigate collisions in 2D and to apply conservation of momentum and energy to 2D collisions
3. Analyze video data of the collision between two pool balls and demonstrate that this is a highly elastic collision in which momentum is conserved.

Go to the applet Collision 1D and open the lesson labeled Lesson 3: Elasticity and Conservation of Kinetic Energy. Use the applet to help answer all of the questions in the tutorial. It is a good idea to work on this with a partner but each person is expected to hand in their own worked tutorial.

Go to the applet Collision 2D and open the lesson labeled Lesson 2: Conservation of Momentum in 2D Collisions. Use the applet to help answer all of the questions in the tutorial. It is a good idea to work on this with a partner but each person is expected to hand in their own worked tutorial.

Go to the following video lab link - vl_pool.html - and analyze the collision between the two pool balls. Each ball has a mass of 0.160 kg and a radius of 0.032 m. Prepare a data table in which you provide the following information:

1. Initial x and y velocity of the moving ball
2. Final x and y velocities of each ball
3. Initial x and y momentum of the balls
4. Final x and y momentum of the balls
5. Initial and Final Kinetic Energy of the system
6. Initial and Final Rotational Energy in the system
7. Energy in Centre of Mass

Include as well, an Excel graph showing the trend lines that you used to determine the velocities of the balls. Write a paragraph in which you discuss whether or not your experiment shows that momentum was conserved and that the collision was highly elastic. Find the coefficient of restitution (use energy and/or relative velocity) and show your calculations.

Date Due: One week from today.