Question of the day #26 What do you think of when you hear the word “momentum?” Provide a definition and/or example sentence or situation. Today’s Activities: Momentum Video Ch 5 Vocab Oct 20 Homework: Complete vocab Bring book on Thursday!

Question of the day #27 Looking at your vocab, decide if this picture shows an elastic collision or an inelastic collision. Explain. Today’s Activities: Bingo Oct 21 Homework: None Bring book tomorrow!

No QD today Today’s Activities: Momentum & Impulse Notes Ch 5 Directed Reading p.1-2 Oct 22 Homework: Finish DR p.1-2 Ch 5 Quiz on Oct 29 Bring book tomorrow too

Question of the day #28 What is the impulse needed to stop a 10 kg bowling ball moving at 6 m/s? If this occurs in 2.0s, how much force was needed to stop it? Today’s Activities: Conservation of Momentum Notes Directed reading p.3-4 Ch 5 Quiz on Oct 29 Bring a jacket Monday Oct 23 Homework: Finish DR p.3-4

Question of the day #29 Ball 1 is at rest. Ball 2 strikes it. There are 3 systems involved here (system 1, system 2, system 1&2). Draw the picture and then draw a circle around each of the 3 systems. Now write these statements and fill in the blank: A) The momentum of system 1 will ___________ after the collision. B) The momentum of system 2 will ________ after the collision. C) The momentum of system 1&2 will __________after the collision. Today’s Activities: Correct DR, pass back tests Impulse Demo Ch 5 Explorations Ch 5 Quiz on Thursday Oct 26 Homework: Finish Ch 5 Explorations Answer choices: stay the same, increase, decrease

Question of the day #30 Think of an example in your life where you have experienced an impulse that caused pain. Explain what happened to cause this change in momentum. Was there any way you could have reduced the pain? Explain. Today’s Activities: Momentum lab Ch 5 Quiz on Thursday Oct 27 Homework: None – lab continued in class tomorrow

Get Pre-lab signed off FIRST Read directions in the procedure carefully! Person 1: Measures the mass (convert to kilograms!) and releases the cart Person 2: Times the cart from top to bottom of ramp Person 3: Measures distance (in meters!) from bottom of ramp to where the block stopped ALL record the data! ALL work on calculations after collecting data.

Question of the day #31 In yesterday’s lab, what was the experimental question that was asked? What was the independent variable? What was the dependent variable? What were 2 controlled variables? Today’s Activities: Finish lab Ch 5 Quiz tomorrow Journal Check on Nov 4 Bring book on Nov 4 Oct 28 Homework: Finish lab? Prepare for quiz

Question: How does mass and momentum affect the distance a block moves during an inelastic collision? Independent variable: Mass and momentum Dependent variable: Distance block moves Controlled variables: Ramp angle, ramp length, person who times, same cart, same block

Question of the day #32 A bug hits the windshield of your car and splats. What does Newton’s 3 rd law tell us about the interaction between your car and the bug? What does the Law of Conservation of Momentum tell us about the bug and the car? How is this possible? Today’s Activities: Collision Simulator lab Journal Check on Wednesday Bring book on Wednseday Nov 2 Homework: None

No QD today Today’s Activities: Collision Simulator lab Journal Check tomorrow Bring book tomorrow Nov 3 Homework: Finish lab

No QD today Today’s Activities: Journal check Ch 6 vocab Nov 4 Homework: Finish vocab

Question of the day #33 A 2 kg ball of putty moving to the right collides with a 1 kg ball of putty moving to the left. The resulting blob does not move. What can you conclude about the relative speeds of the balls before the collision? Today’s Activities: Work & Power Notes Work & Power Practice WS Nov 5 Homework: Finish worksheet After Before

Question of the day #34 You lift a 1.1kg book up 0.87m in 0.5s. How much work did you do? What was the power used? (Hint: find the weight of the book first and use that as the amount of force used). Today’s Activities: Work lab Nov 6 Homework: Completely fill in p2 of lab

No QD today – get out your lab, p. 2 should be completed Today’s Activities: Bill Nye Gravity Finish Work Lab Nov 9 Homework: Finish lab Ch 6 Quiz on Nov 16 – vocab, work, power, potential energy

Question of the day #35 How are weight and mass different from each other? Create a t-chart to compare them. Today’s Activities: Potential Energy & Weight Notes Practice WS Nov 10 Homework: Finish practice worksheet Weight Mass Ch 6 Quiz on Nov 16 – vocab, work, power, weight, potential energy

Question of the day #36 A)A 22lb box (10.0kg) has what weight in Newtons? B)If the box is on the roof of a 2 story building which is 4.5m high, what is its potential energy? C)At the top of a 25m hill a roller coaster with a mass of 1000kg has how much potential energy? D)25,000J of work can be done on a coaster. If the coaster travels 50m to make it down the hill, how much force was put on the coaster? Today’s Activities: Roller Coaster Physics Nov 12 Homework: Start preparing for quiz Ch 6 Quiz on Monday– vocab, work, power, weight, potential energy

Roller Coaster Questions? A) What happens if the first hill on a roller coaster isn’t high enough? Explain in terms of potential energy and kinetic energy B) How can a roller coaster go upside down in a loop? Explain in terms of potential energy and kinetic energy. Nov 12

No QD today Today’s Activities: Correct Homework from yesterday Quiz Review Kinetic Energy Notes Nov 13 Homework: Study for Quiz Ch 6 Quiz on Monday– vocab, work, power, weight, potential energy

Quiz Review 1.How much work is done on a box that has a force of 5N on it if it moves 8m? 2.If a machine does 12,000J of work in 2min(120s), how much power did it have?

Quiz Review 3. How far does a rock go if 150J of work are done on it when it is thrown and it has a force of 3.2N? 4. If a machine uses 1600W and does 82,000J of work, how long was the machine working?

Quiz Review 5. A dog has a weight of 89N. What is the dog’s mass? 6. The dog is held 1.1m up in it’s owner’s arms. What is its potential energy?

Quiz Review 7. The 1050kg car is at the top of a 1500m mountain. What is its potential energy? 8. A car has a mass of 1250kg. What is its weight in Newton’s?

Question of the Day #37 Make a sketch of the situation, then calculate how much energy the object has. A 72kg cliff diver stands 58m above the water. What is his potential energy? How much kinetic energy does he have as he hits the water? Today’s Activities: 5 min study time – use it or lose it Quiz – Ch6vocab, Work, Power, Weight, Potential energy PE/KE practice Nov 16 Homework: Finish PE/KE practice Ch 5-6 Unit Test on Nov 24

No QD Today Today’s Activities: Online Roller Coaster Sim Tommorrow: Finish Roller Coaster sim Nov 18 Homework: None Ch 5-6 Unit Test on Nov 24

No QD Today Today’s Activities: Online Roller Coaster Sim Nov 18 Homework: None Ch 5-6 Unit Test on Nov 24

No QD Today Today’s Activities: Online Roller Coaster Sim Nov 19 Homework: Finish roller coaster packet Ch 5-6 Unit Test on Nov 24

Question of the Day #38 What 3 types of energy are present on a roller coaster that has friction? Today’s Activities: Comparing Concepts WS Science skills packet Nov 20 Homework: Finish science skills packet Ch 5-6 Unit Test on Nov 24

No QD today Today’s Activities: Go over assignments Test review Nov 23 Homework: Study for test Ch 5-6 Unit Test tomorrow! -vocab & concept questions -calculations

Test Review 1.A 25kg go-cart has a velocity of 9m/s. What is its momentum? 2.A football player has a momentum of 410kg m/s. If he is running 5m/s, what is his mass?

Test Review 3. A crash test dummy experiences a force of 35N over 0.22s. What is the impulse experienced by the dummy? 4. A cracking egg experiences an impulse of 18Ns. If this occurred in 0.15s, what was the force on the egg?

Test Review 5.Ball 1 and 2 are about to collide. Ball one has a momentum of 5kg m/s and Ball 2 has a momentum of zero. After the collision, what is the momentum of the entire system (both balls combined)? 6.Name 2 things that make elastic and inelastic collisions different.

Test Review 7. How much work is done on a box that has a force of 5N on it if it moves 8m? 8. If a machine does 12,000J of work in 2min(120s), how much power did it have?

Test Review 9. The 1050kg car is at the top of a 1500m mountain. What is its potential energy? 10. A car has a mass of 1250kg. What is its weight in Newton’s?

Test Review 11. The 1050kg car is going 15m/s. What is its kinetic energy? 12. A 0.5kg ball has a speed of 5m/s. What is its kinetic energy?

Test Review 13. At the top of the first hill, what kind of energy does a roller coaster have? As it starts to go down, what are the 3 or 4 types of energy that the roller coaster now has? 14. If a ball has 32J of potential energy when in the air, how much kinetic energy does it have when it is half way to the ground?

No QD today Today’s Activities: Ch5-6 Test Drawing assignment Nov 24 Homework: Finish drawing Drawing assignment: -Choose a concept we have learned about in this unit (i.e. collisions, work, energy, momentum, impulse) -Give your drawing a title -Illustrate a situation that demonstrates this scientific concept -State/explain the scientific concept you have chosen and how it relates to your picture (3-4 sentences)