1. QQ:
What is the ratio of the distance an object moves to the amount of time it moves called?
A river flows at a velocity of 4 km/hr relative to the bank. A leaf is blown by the wind upstream at a velocity of 1 km/hr relative to the river. What is the velocity of the leaf relative to the riverbank?
A skateboarder begins down a ramp at 1.0 m/s. After 3 seconds, her speed has increased to 4.0 m/s. Find her acceleration.

2. 3). Eddie dropped a penny off the roof of a building
3) Eddie dropped a penny off the roof of a building. The penny hit the ground at a speed of 17.2 m/s. How long did it take to reach the ground?

3. Anthony hollered into a canyon and listened for its echo
Anthony hollered into a canyon and listened for its echo. The speed sound travels through air is 340 m/s. When his voice hit the bottom, it bounced back. The time it took for him to hear it was 6 seconds. How deep was the canyon?
S = 340 m/s
d = X
t = 6 s

4. 2 General
Types of Energy
Kinetic Energy: The energy of motion
Depends on
mass and speed

5. 2 General
Types of Energy
Kinetic Energy: The energy of motion
Depends on
mass and speed

6. KE KE

7. Mikayla is riding The Sooper
Coaster. Determine the kinetic
energy of a 625-kg roller coaster
car that is moving with a speed of
18.3 m/s.

8. Energy that is stored based on the position of the object
Potential Energy:
Energy that is stored based on the position of the object

10. Candis is diving from the top of a 10. 0 m high diving platform
Candis is diving from the top of a 10.0 m high diving platform. She has a mass of 50 kg. Calculate her potential energy relative to the ground.

11. Today’s Objective: I can describe motion using Newton’s Law’s of Motion.

12. Arrange 4 pennies in a row so they are touching each other.
Using your index finger, slide a 5th penny across the surface in line with the row of pennies so that it strikes a penny at one end of the row.

13. Write a description of your observations
Write a description of your observations. Describe how each penny moves as a result of the collision.
What do you think caused the pennies to move after the collision? Why didn’t they move before the collision?

14. Create a table that looks like this:
Trial
Observation
Fast
Slow
Accelerate/
Stop

15. Place the index card flat on the table.
Put a coin in the middle of the card.
As quickly as you can, remove the card by sliding it out from under the coin.
Record your
observations.

16. Repeat step one removing the card slowly.
Record your results.

17. Repeat step one again. This time slowly accelerate the card and then suddenly bring it to a stop. Record your observations.