1. Energy and Motion Table of Contents What Is Energy?
Conservation of Energy
Describing and Measuring Motion
Speed and Velocity
Acceleration

2. What Is Energy? Kinetic Energy
The kinetic energy of an object depends on its speed and mass.

3. What Is Energy?
What is the SI unit for each quantity?

4. What Is Energy? Gravitational Potential Energy
The rock climbers have gravitational potential energy, which is potential energy related to an object's height.

5. What Is Energy? Elastic Potential Energy
The energy stored in a stretched object, such as the trampoline, is elastic potential energy. Rank the amount of elastic potential energy of the trampoline from greatest to least.

6. Conservation of Energy
Pendulum
A continuous transformation between potential and kinetic energy occurs in a pendulum. What are the types of energy the pendulum has at positions A, B, and C?

7. Conservation of Energy
Conserving Energy While You Ride
Transformations between potential and kinetic energy occur during a roller coaster ride. How much potential and kinetic energy does the coaster have at each point?

8. Describing and Measuring Motion
Nicolaus Copernicus
In 1543, Copernicus published On the Revolution of the Heavenly Spheres, a book based on his 30-year study of the solar system.

9. Speed and Velocity
Use the data from all three legs to solve for each triathlete’s average speed.

10. Speed and Velocity
Constant Speed
What is the jogger's speed?

11. Speed and Velocity Changing Speed
The graph shows how the speed of a jogger varies during her second day of training. What is the rise, the run, and the slope for each segment of the graph?

12. Acceleration Acceleration
The airplane is accelerating at a rate of 8 m/s2. Determine the speed of the airplane at 4.0 s and
5.0 s.
0 m/s
8 m/s
16 m/s
24 m/s

13. Acceleration Deceleration
The airplane touches down with a speed of 70 m/s. It decelerates at a rate of -5 m/s². Determine its speed after each second of its deceleration.

14. Acceleration Speed-Versus-Time Graph
Use the time and speed data in the table to plot a line graph. Plot time on the horizontal axis. Plot speed on the vertical axis. What would be a good title for the graph?

15. Acceleration Distance-Versus-Time Graph
Use the time and distance data in the table to plot a line graph. Plot time on the horizontal axis. Plot distance on the vertical axis. What would be a good title for the graph?