1. Quick Question: Explore these 2 cases
Quick Question: Explore these 2 cases. A tennis ball collides against a brick wall. Answer the questions & explain your answers.
Which case has the greatest change in velocity?
…the greatest change in acceleration?
…the greatest change in momentum?
Which case has the greatest impulse?

2. Which case has the greatest change in velocity?
Case A: Vf – Vi
-5 m/s m/s = - 15 m/s
Case B: Vf - Vi
-28 m/s – 30 m/s = - 58 m/s

3. 2. Which case has the greatest change in acceleration? Case A
5 m/s m/s = - 15 m/s
1 s 1 s
Case B:
-28 m/s – 30 m/s = - 58 m/s
1s 1 s

4. Which has the greatest change in momentum?
Momentum depends on velocity change. The mass remains the same in both cases but the velocity definitely changes. The velocity changes the most in case B, so it has the greatest change in momentum.

5. Which case has the greatest impulse?
Impulse is the term that describes the change in momentum. The momentum changes the most in case B so it also has the greatest impulse.

6. A Which case has the greatest change in velocity?
…the greatest change in acceleration?
…the greatest change in momentum?
Which case has the greatest impulse? A A A A

7. a Magnetic Linear Accelerator.
Exploring Energy with
a Magnetic Linear Accelerator.