06-07_task

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Apr 3, 2024

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Name: Date: School: Facilitator: 6.07 Elastic Collision Lab Use the Collision Carts interactive linked on the Task page to complete the following virtual lab. Be sure to complete all 4 parts of this lab. Part 1: Preparation 1. Open the Physics Classroom Collision Cart interactive. Select the double arrow button in the top left of the interactive to resize. 2. Select the Elastic Collision option at the bottom of the screen. 3. To learn how the interactive works, experiment with the following: a. Change the Mass and Initial Velocity of the two carts and select the black Start button at the top right of the screen. Try several combinations of mass and initial velocity. b. Change the position of the carts by dragging them to different parts of the track and seeing how it impacts the collision. c. Make sure you know where the Start, Pause, and Reset buttons are on the screen. Part 2: Elastic Collision 1 For the first collision, the blue cart will initially be at rest. BEFORE COLLISION AFTER COLLISION 1. Initial Velocity a. Set the initial velocity of the blue cart to 0 m/s. b. Change the initial velocity of the red cart to whatever value you prefer. Record the initial velocity of the red cart here: 3 m/s. 2. Mass: You will determine the mass of each cart for this collision. Change the mass for each cart and record it below: a. Red cart: m = 1 kg b. Blue cart: m = 3 kg

3. Once you have the mass and initial velocities set, run the simulation. Record the final velocity: a. Red cart final velocity: -2 m/s b. Blue cart final velocity: 2 m/s 4. Complete the table below about your collision simulation using the data you have collected. You will need to complete calculations to determine change in momentum. Elastic Collision 1 Before Collision After Collision ∆Momentum (Δp) Red Cart 1 kg x 4 m/s = 4 kg•m/s 1 kg x -2 m/s = -2 kg•m/s 6 Blue Cart 3 kg x 0 m/s = kg•m/s 3 kg x 2 m/s = 6 kg•m/s 6 System Total 4 4 0 Part 3: Elastic Collision 2 For the second collision, the blue cart will be moving slower than the red cart. BEFORE COLLISION AFTER COLLISION 1. Initial Velocity a. Change the initial velocity of the red cart to whatever value you prefer. Record the initial velocity of the red cart here: 9 m/s. b. Change the initial velocity of the blue cart to any values less than the red cart velocity. Record the initial velocity of the blue cart here: 4 m/s.

2. Mass: You will determine the mass of each cart for this collision. For this collision, the blue cart’s mass should be less than the red cart. Record the mass for each cart below: a. Red cart: m = 3 kg b. Blue cart: m = 1 kg 3. Position the blue cart near the red cart so that the collision occurs near the middle of the track. 4. Once you have the mass and initial velocities set, run the simulation. Record the final velocity: a. Red cart final velocity: 6.5 m/s b. Blue cart final velocity: 11.5 m/s 5. Complete the table below about your collision simulation using the data you have collected. You will need to complete calculations to determine the change in momentum. Elastic Collision 2 Before Collision After Collision ∆Momentum (Δp) Red Cart 3 kg x 9 m/s = 27 kg•m/s 3 kg x 6.5 m/s = 19.5 kg•m/s 7.5 Blue Cart 1 kg x 4 m/s = kg•m/s 1 kg x 11.5 m/s = 11.5 kg•m/s 7.5 System Total 31 31 0

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Part 4: Conclusion 1. Was momentum is conserved or not conserved in your simulations? Identify the evidence that provides support for your claim; refer to specific sets of values in each data table that serve as credible evidence. Write 3-5 complete sentences explaining your opinion and evidence. n my stimulations, momentum was conserved. I know this because in both charts, the momentum stayed the same before and after the collisions. For example, if the change in momentum was 7.5 for both cars, there is no change in 7.5 and 7.5, so momentum was conserved. And, if the system total was 31 for before and after the collision, there is no change in momentum between 31 and 31

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