1. What is the impulse indicated from this graph? Impulse – Momentum Experiment

2. What is the average force indicated from this graph? Impulse – Momentum Experiment F avg = Area/  t

3. Area = F avg  t = Impulse =  p

4. Impulse – Momentum Experiment Design an experiment to measure: 1. the impulse during a collision, and 2. the change in momentum ( mv final – mv initial ) Then compare each quantity and see if they are equal. Impulse = Change in momentum A force sensor will give you a Force vs. time graph. The motion sensor will read the velocity before and after the collision. Make 8 different runs. Things you can vary: mass of the cart, initial velocity, and elasticity of the collision. A force sensor will give you a Force vs. time graph. The motion sensor will read the velocity before and after the collision. Make 8 different runs. Things you can vary: mass of the cart, initial velocity, and elasticity of the collision.

5. Impulse – Momentum Experiment m

6. ViVi VfVf Area Area = mv f – mv i

7. Data trial mass of car (kg) initial velocity final velocity  p = m(v f - v i ) Area under F(t) graph % Difference between  p and the area 1 2 3 4 5 6 7 8

8. 1. Your lab partner notes that on 1 run, the cart’s initial velocity was.4m/s, and it’s final velocity was also.4 m/s. He concludes that  p = 0. Do you agree or disagree? Explain. 2. Sketch a Force vs. t graph for a collision between the cart and a spring with a large spring constant, and one with a smaller constant. Put them on the same graph and label each.

9. Sketch the v vs. t graph given the F(t) graph. Use the same time scale for each And draw both in your journal.

10. Starter Data Table Sample Calculations Questions Summary Exit