1. © 2015 Pearson Education, Inc.
Section 4.8
Clicker 1
A rocket is propelled forward by ejecting gas at high speed. The forward motion is a consequence of
conservation of energy.
conservation of momentum.
both of the above.
neither of the above.
© 2015 Pearson Education, Inc.

2. © 2015 Pearson Education, Inc.
Section 4.8
Clicker 1
A rocket is propelled forward by ejecting gas at high speed. The forward motion is a consequence of
conservation of energy.
conservation of momentum.
both of the above.
neither of the above.
© 2015 Pearson Education, Inc.

3. Equal mass - Elastic

5. Equal mass - Inelastic

6. Equal mass - Explosion

7. Light cart hits heavy cart - Elastic

9. Light cart hits heavy cart - Inelastic

11. Unequal Mass - Explosion

13. Clicker 2:
Rank the inertias of carts A, B, and S from least to greatest.
A, B, S
B, S, A
A=B, S
S, A=B
S, B, A

14. Clicker 3:
Rank the inertias of carts A, B, and S from least to greatest.
A, B, S
S, A, B
B, S, A
S, B, A
A, S, B

15. Rotational Inertia https://www.youtube.com/watch?v=lk_Pwu7nf1U