DAY 23
Labs are due tonight by 11:59pm
#Goals: SWBAT...
1. Interpret the meaning of lines on P-t and V-t graphs.
2. Sketch P-t and V-t graphs which match given characteristics.
Warm-Up (3min)
Describe the motion shown in the two graphs on the board
CLASSWORK
1. Lab Q & A (5 min)
2. 023A: QUIZ 5: Acceleration Problem Solving (12min)
3. #023B: Graph Sketching and Recognition (continued) (15min)
- Label your notes with the number and topic listed above
- You are about to pour through quite a bit of information. It is suggested that you first read the questions and make efforts to answer all the questions. Physics is learned most effectively when your mind is actively engaged in the processes of analyzing and predicting. Avoid treating the information on this page as factual information to be dumped inside of a mental receptacle. Avoid merely looking at the answers; take the time to study the logic of the answers.
Once you've answered the question, check your answer using the "Show Answer!" link.
Link to assignment is HERE. Answer 31-37 in your notes; paraphrase each question in your notes prior to answering.
If still unclear, online help is in the links below.
LINK for p-t graphs
LINK for v-t graphs
3. 023C: Words Into Action
We're going to play a game (sounds fun, right? Well, it's a physics game, sooo...)
Practice turning a written description into movement.
Your job, copy the scenario number (example: 1-1, 1-2, 1-3, etc), then sketch the graph and describe (write) the settings required to solve each scenario.
Example: For 1-2, I'd draw the graph, and write the following settings: xi = 0m vi = -1m/s
Complete World 1: 1-14
you may need to enable Flash software to make the activity run.
Turn down the volume - there's calming music on this game
HOMEWORK
Complete any of the remaining practice problems 5-37 from #022A. Tuesday you may be required to show your solution to one of these on the board. Be ready! If you have questions, ask via Remind, or bring them to class.
Labs are due tonight at 11:59PM
Complete World 1 from 023C
#Goals: SWBAT...
1. Describe the relationship between inertia and mass
2. Match force names to their abbreviations and to their definitions
3. Define force and the unit of force
Warm-Up (5min)
Copy and fill in (or choose) the correct answers for the following:
1. Inertia: the resistance an object has to ______________
2. The more inertia that an object has, the more _____ it has.
3. A more massive object has a (greater/lesser) tendency to resist changes in its state of motion.
4. What is the meaning of "net" in relation to forces?
5. A net external force equal to zero means the forces are (balanced/unbalanced)
6. The presence of a net external force means that the object will be (accelerating/at rest)
CLASSWORK
1. #023A: What is a force?
Force: Sometimes defined as a push or a pull on an object. Better Definition: A force is the ability to cause a change in state of motion of an object.
Unit: Force is a quantity that is measured using the standard metric unit known as the Newton. A Newton is abbreviated by an "N." To say "10.0 N" means 10.0 Newton of force. One Newton is the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s. Thus, the following unit equivalency can be stated:
1 Newton = 1 kg • m/s2
Is force a vector?
2. #023B: Force Types and their Classifications
What are the classifications of force?
Take 2 minutes to review Mr. P´s notes, go here ---> LINK
Make a four column chart (see example on board)
Using your knowledge, and the notes above, match the symbols/names of the forces with their definitions, then define each for as a ¨contact force¨ or an ¨action-at-a-distance/field¨ force
Definitions:
1. The force exerted by a compressed or stretched spring upon any object that is attached to it.
2. A force that is applied to an object by a person or another object.
3. The force exerted by a surface as an object moves across it or makes an effort to move across it.
4. A special type of frictional force that acts upon objects as they travel through the vacuum you can breathe. This force is often observed to oppose the motion of an object.
5. The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself.(aka weight)
6. the force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends
7. The support force exerted upon an object that is in contact with another stable object
Symbols/Names:
Applied Force Fa
Gravitational Force Fg
Normal Force FN
Force of Friction Ff
Air Resistance Fair
Tension Force Ftension
Spring Force Fspring
Stuck?
Help is here ---> LINK
3. #023C: Force Scenarios
Which forces are being applied here? What are the two objects exerting/feeling the force?
A. The dog pulls on the leash.
B. The hammer hits the nail.
C. I fall out of a tree toward the Earth
D. The car slides to a stop.
4. #023D: Are Mass and Weight the Same?
What do you think?
Mass is how much ______ is in an object. In science, we call that stuff _____
Weight is the _____ of _______ upon that stuff.
Which is a force, weight or mass?
5. #023E: Practice Questions
LINK Answer 1 & 2 (complete outside of class if necessary - I'm here at lunch/nutrition for help)
At Home Learning (HW)
1. Bring your lab materials (pre-lab, data, rough draft) and test study guide to class tomorrow
2. If you didn't complete 23D or 23E, complete them for tomorrow
3. #023F:
Take Notes: LINK 1
Watch the video, and answer the EdPuzzle Questions: LINK 2