1. a) A train cut-out with the windows gone b) 2 or 3 cut-out people
Which train is moving?
Make a train video which has different explanations for motion based on what you focus your camera on.
a) A train cut-out with the windows gone
b) 2 or 3 cut-out people
c) Background (forest, city, etc)
d) Your phone or other camera
Relative Motion 1

2. Where will 2 cars collide?
Observation Experiement
Method
Materials
Timer
Meter Sticks
Sand Bags
Blue & Red Car
Procedure
Error/Uncertainty
Results
Data
Testing Experiement
Predict
Method
Materials
Procedure
Error/Uncertainty
Results
Data
Compare Predicted to Actual Outcome, Revise if Necessary
Reason a Hypothesis from Patterns in Data
Velocity 2

3. How does a ball move on a ramp?
Meter sticks, balls, sand bags, books, timers
Ball On A Ramp Direct Measurement Video
Acceleration 3

4. 1. How could we find Vf from our model of acceleration if we know all other physical quantities?
2. Create mathematical procedures for finding displacement from this graph. Vf Vi
3. Can we derive an equation which does not include time?
Kinematic Equations 4

5. Hypothesize how motion changes.
Materials (every single material MUST be used)
Mass scales
Your muscles and bodies
Different size balls
Stopwatch
Meter stick
Newton’s 1st and 2nd Law 5

6. Hypothesize how two things push or pull on each other.
Materials:
2 bathroom scales
2 spring scales
2 scooters
Newton’s 3rd Law 6

7. Hypothesize the relationship between the force exerted on your shoe by the surface it is on and the mass of your shoe.
Hypothesize how friction operates on a subatomic scale. Materials: phet.colorado.edu ‘Friction’
You are an astronaut on a shuttle who lost a great deal of mass due to being very, very ill and need to figure out how well you are ‘putting on weight’. Design an experiment to do this using only a meter stick (0.5mm precision), clock (0.5s precision), and a glove with a long string wherein you know the coefficient of kinetic friction between the two.
Surface Forces 7

8. Hypothesize what determines the gravitational force between two objects. ‘Gravity Force Lab’ PHET

9. How do gravitational forces differ from more mundane pushes and pulls?
Hypothesize Earth’s gravitational field strength on the surface of Earth.
Electric Fields 9
Gravitational Force Field 9

10. Projectile Physics Hypothesize how a launcher projects marbles.
Create a guide for predicting where the marble will land.
Predict how far the marble moves if firing at an random angle from a randomly chosen compression by using a different group’s guide for their launcher. Beta testing!
Projectiles & Spring Force 10

11. Lets consider a ball being launched across a flat field where the initial and final heights of the ball are the same. Derive an expression for the horizontal distance travelled solely in terms of the initial velocity, acceleration due to gravity, and the angle at which it is fired.
***Hints!!!***
How could we make our reference frame as easy as possible for ourselves?
What kinematics equation could we use which requires the least assumptions and is the most comprehensive?
How do we link the horizontal and vertical components?
How could we simplify?
Projectiles: Range Equation 11

12. Hypothesize how orbits work
Hypothesize how orbits work. What is the tangential velocity of an orbiting object? Materials Ball on a String Gravity and Orbits PHET Angry Birds Space Game
Central Force , Orbits, and Kepler’s Laws 12

13. What do we need to take into account to compare these three scenarios?V2 V1 V2 V1
V`2
V`1
What do we need to take into account to compare these three scenarios?
Momentum 13

14. Hypothesize how the momentum before a collision relates to the momentum after a collision. Design experiments using: 1. pool ball and a golf ball 2. phet.colorado.edu ‘collision lab’
Conservation of Momentum 14

15. Create bar graphs to chronicle the following scenario.
You have no money in your pocket, $60 in your ATM account, and a gift card with $20 on it.
You withdraw $20 cash from the ATM.
Next, you buy a lemons and a pitcher for $10 cash at Jones Grocery. (The initial state for this process is the same as the final state of the previous process.)
After returning from the grocery store, you make lemonade and manage to sell enough to make $10.
When you are finished selling lemonade, you spend $20 cash to put gas in your car so you can drive to Target.
At Target, you purchase the new Super Mario Brothers game for Wii for $50. You empty out your gift card and use your ATM card to pay for the rest.
Conservation Bar Graphs 15

16. Chalk, Rubber Band, Cart, Ramp, Massive Object
How destructive is it?
Chalk, Rubber Band, Cart, Ramp, Massive Object
Work & ‘Stored Work’ 16

17. Hypothesize where work goes when you do work to… …lift an object on any planet. …move an object from rest. …stretch a spring.
Stored Work – Energy 17

18. What do a car’s tires feel like after they skid to a stop
What do a car’s tires feel like after they skid to a stop? What do they smell like? Why? Friction PHET Energy Skate Park PHET
Car Brake Video
Thermal Energy 18

19. Hypothesize the spring constant of a springy toy.
Hypothesize the maximum velocity of a dropped ball and the temperature increase after a bounce.
Hypothesize the spring constant of a springy toy.
Hypothesize the work done in each single wind of a wind-up toy.
Toy Energy 19

20. Predict the order in which marbles reach the bottom.
Create a proposal for a Stairmaster which uses the power of your legs for all the lights in a house (ignore the kitchen).
Power 20

21. What is the mass of the bob. meter stick & timer What is Vpig
What is the mass of the bob? meter stick & timer What is Vpig? meter stick
Circles & Rotational Kinematics 21

22. How do you open a book or door?
Balancing Act PHET
What is the mass of a rock?
Torque & Equilibrium 22

23. World Record Skate Spin Video
Moment of Inertia & Angular Momentum 23

24. Hold your hand like a telescope and keep the center of your telescope on the center of your book. Place your finger in the center of your book and spin your book around this central axis.
Now place your finger NEAR one corner of the book, not on the corner. Spin your book around this weird pivot and watch the whole thing.
Now place your finger NEAR one corner of the book, not on the corner. While still keeping your telescope in the CENTER OF MASS of your book for the, spin your book around this weird pivot.
Compare these three scenarios. Using your data, hypothesize how we could represent the moment of inertia if the axis of rotation is neither the center of mass nor the end, but somewhere in the middle. Combine the perspective of the person with their telescope on the center of mass with the perspective of the person watching the other person’s telescope.
Moment of Inertia: Parallel Axis Theorem 24

25. Hypothesize and Derive as many relationships as you can for a mass-spring system.
Circles and squares, sines and lines,
It takes two lines two times to square.
It takes two sines in time to circle.
Squares and lines, circles and sines.
Derive an expression for the angular frequency if you know the spring constant and the mass. Assume the only force acting on your system is the spring force.
Image courtesy of Hyperphysics
Simple Harmonic Motion: Spring Oscillation 25

26. Hypothesize the restoring force of a pendulum.
Derive an expression for ω assuming the only force is this restoring force and θ is small.
Simple Harmonic Motion: Simple Pendulum 26

27. Combine two similar tones
Wave on a String
Wave Interference
Sound
PHET
Combine two similar tones
Sound, Superposition, & Interference 27

28. Masses and Springs Wave on a String Pendulum Lab Resonance PHET
Tacoma Narrows Bridge
Resonance, Damped & Driven Oscillations 28

29. ‘Sound’ & ‘Wave Interference’ PHET
What does it sound like when you yell in the stairwell?
Can you hear someone in another room if the door is open?
Can you hear someone in another room if the door is closed?
‘Sound’ & ‘Wave Interference’ PHET
Reflection, Diffraction, and Refraction 29

30. Hypothesize how the relative motion of a wave source and the observer may affect the perceived wave using this.
Doppler Shift 30

31. How does the sound made by a person yelling close to you compare to the sound made by a person yelling far away?
Intensity of Waves 31