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Agenda 1) Warm-Up 5 min 2) Physics Vocab. Words 10 min 3) Binder Set-up 5 min 4) Review for Quiz 15 min 5) Vector Notes 10 min 6) Speed & Velocity WS.

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Presentation on theme: "Agenda 1) Warm-Up 5 min 2) Physics Vocab. Words 10 min 3) Binder Set-up 5 min 4) Review for Quiz 15 min 5) Vector Notes 10 min 6) Speed & Velocity WS."— Presentation transcript:

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2 Agenda 1) Warm-Up 5 min 2) Physics Vocab. Words 10 min 3) Binder Set-up 5 min 4) Review for Quiz 15 min 5) Vector Notes 10 min 6) Speed & Velocity WS II 40 min Add the two magnitudes. North

3 1.Relative: Motion is relative; all measurements are measured from a starting point, reference point. Every measurement is measured relative to this point. 2.Rate: a quantity divided by time 3.Scalar: a quantity, like distance, only magnitude or size. 4.Vector: a quantity, that has magnitude and direction

4 In front of dividers: Homework chart (orange) Formula chart (purple) Syllabus Lab Safety Rules Coupon (green) Notes/Handouts Distance & Displacement Notes II Distance & Displacement Notes I Physics Vocab. Chart Sig. Fig Handout Linear Motion Notes “About Science” Notes Quizzes Daily Work Labs Misc.

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6 Review Linear Motion Review Linear Motion Speed & Velocity Distance & Displacement

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8 Distance and Displacement Distance and displacement are two quantities which may seem to mean the same thing, yet they have distinctly different meanings and definitions. Distance (d) is a scalar quantity which refers to "how much ground an object has covered" during its motion. Displacement (d) is a vector quantity which refers to "how far out of place an object is from its original position"; it is the object's change in position.

9  Even though the physics teacher has walked a total distance of 12 meters, her displacement is 0 meters.  Yet, when she is finished walking, she is not "out of place" – i.e., there is no displacement for her motion (displacement = 0 m). Displacement, being a vector quantity, must give attention to direction.  The 4 meters east is canceled by the 4 meters west; and the 2 meters south is canceled by the 2 meters north.

10  Location of the object at a specific time Position final - Position inital = displacement

11  You drive the path, and your odometer goes up by 8 miles (your distance).  Your displacement is the shorter directed distance from start to stop (yellow arrow). start stop

12 Explanation  The most important distinction between “distance” and “displacement” is that distance is a scalar and displacement is a vector.  Scalars are simple magnitudes.  ___You fill in_____  ________________  Vectors contain information about the magnitude (size) and direction of a physical observable.  __________________

13 Evaluation

14 Conclusion  Distance is the length of the path traveled.  Displacement is the length and direction of a line from start to finish.  Position is a location relative to a point of reference.  Motion is a change in position.  Displacement is a vector quantity that contains both magnitude and direction.

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17  Speed = Distance Time  If a runner travels 100 m in 10 seconds what was his average speed?  Can solve for the other pieces too  Distance = speed x time  Time = Distance Speed

18 Vectors

19  How do we draw forces? With VECTORS Directions of vectors are usually defined as North, South, East, West

20  An arrow is used to depict a vector.  The arrow’s length represents the magnitude of the vector.  The arrow points in the Direction of the magnitude

21  How do you get the resultant when we have 2 vectors going in the same direction  ADD their magnitudes  How do you get the resultant when we have 2 vectors going in the same direction  SUBTRACT their magnitudes

22  This “New Vector” is the Net Vector or RESULTANT

23  Draw vectors & solve the following:  Determine the total displacement of a person moving 5.5m West, then 6.3m East 5.5 m 6.3 m.8 m

24  Determine the total displacement of a person that is moving 4.5 m West, 5.6 m East and 8.1 m West.

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26 DUE TODAY: Vocab. Chart (KEEP) Distance & Displacement Notes II (KEEP) DUE NEXT CLASS: CALCULATOR Binder/folders/CALCULATOR STUDY FOR QUIZ STUDY FOR QUIZ Speed & Velocity WS II Speed & Velocity WS II “One's mind, once stretched by a new idea, never regains its original dimensions.” Oliver Wendell Holmes


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