Presentation on theme: "the action or procedure of moving or being moved."— Presentation transcript:

1 the activity or process of relocating or being relocated.Unit 3 Ch. 8- Motion mo·tion/ˈmōSH(ə)n/ Noun the activity or procedure of moving or being relocated.

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2 In pairs: Describe the motion of this soccer round prior to and after it is kicked

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3 Motion Definitions Quantities that are measured or counted have actually a magnitude yet may also contain a direction. Magnitude refers to the size of a measurement or the amount you are counting. Example: 100km/hr. Quantities that define magnitude but execute not include direction are dubbed scalar amounts or scalars. Example: 25 seconds Quantities that explain magnitude and also include direction are referred to as vector quantities or vectors. Example: 5 km north

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4 Motion Definitions When you use maps, what kind of amount are you using? Answer: Vectors

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5 Motion Definitions Distance (d) is a scalar quantity that describes the size of a route in between 2 points or locations. Example: A perchild ran a distance of 400 m. Position ( ) is a vector quantity that explains a certain suggest family member to a recommendation suggest. What is an example of position? Example: The college is 3.0 km eastern of my home. *What does SI unit stand also for? What is an example of an SI unit

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6 Time Interval and also PositionTime (t) is a principle that explains when an occasion occurs. Initial time (ti) is as soon as the occasion started. Final time (tf) is once the event finimelted. Time interval is the difference in between the final and also initial times. Time interval is calculated by: The time interval to relocate from the fire hydrant to the sign is calculated by: The position of the authorize is 7 m eastern of the tree. See page 348 (c) McGraw Hill Ryerkid 2007

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7 Time Interval and also PositionWho requirements to stretch? I need 3 volunteers via cell phones! Time (t) is a idea that describes as soon as an event occurs. Initial time (ti) is once the occasion started. Final time (tf) is when the occasion finimelted. Time interval is the difference in between the last and also initial times. Time interval is calculated by: The place of the authorize is 7 m eastern of the tree. See page 348 (c) McGraw Hill Ryerkid 2007

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8 Time Interval and PositionWho demands to stretch? I require 3 volunteers through cell phones! Jog about the perimeter of the class or external. person A via cell phone stands at start perkid B with cell phone stands at a given area Persons A & B take note of time as runner passes. Record on board What is Time interval between various points? The place of the sign is 7 m east of the tree. See web page 348 (c) McGraw Hill Ryerchild 2007

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9 Motion Definitions Displacement describes the straight-line distance and direction from one point to an additional. Displacement explains just how a lot an object’s place has actually adjusted. Displacement is equal to the final position minus the initial place. The SI unit for displacement is metres, m.

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10 Motion Definitions What is the displacement of a runner that runs 1 lap on a track? Hint: Displacement defines exactly how a lot an object’s position has readjusted.

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11 2 friends: Scalar and VectorDescription Example Scalar Quantity  Describes Magnitude just A bag of gold lies 20m from here  Vector  Describes Magnitude AND direction  A bag of gold lies 20m North West of here Scalar’s directions= S Vector"s directions= V

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12 Learning Check: What is the amount that describes the size of a course in between 2 points or locations? Answer: Distance What is the amount that explains a specific point loved one to a reference point? Answer: Position

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13 Learning Check What is the term offered for the distinction between the last and initial time? Answer: Time interval

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14 Now that we know a small about movement, time, position; what various other idea of activity are we missing? (hint: think vector) Direction!!

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15 Watch for Signs Common authorize conventionsWhen utilizing vector quantities, opposite directions are given oppowebsite signs. Typical sign conventions See page 349 (c) McGraw Hill Ryerkid 2007

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16 Watch for Signs Common sign conventionsWhen utilizing vector quantities, oppowebsite directions are offered oppowebsite indications. Between 0 s and also 15 s the person’s displacement is Common sign conventions = 10 m – 5 m = -10 m – 5 m = -15 m = 15 m See page 349 (c) McGraw Hill Ryerboy 2007

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– 5 m = -10 m – 5 m. = -15 m. = 15 m See page 349. (c) McGraw Hill Ryerson">

17 A graph What distance did the perkid walk in this very same time interval?0-15 sec

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18 End of Lecture 1 In your own words, on a item of paper, tell me the distinction in between displacement and distance. Work on peras 2-3 of your occupational book

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19 Unidevelop Motion Objects in unicreate activity travel equal displacements in equal time intervals. Objects in unicreate activity execute not speed up, slow-moving dvery own, or change direction. The position of the round in this photo is shown at equal time intervals. How would certainly you identify if this motion is unidevelop motion? See page 350

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20 Graphing Uniform MotionMotion of an object have the right to be analyzed by drawing a position-time graph. A position-time graph plots place data on the vertical axis (y axis) and also time data on the horizontal axis (x axis). See page 351

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21 Graphing Uniform MotionA best-fit line is a smooth curve or right line that many very closely fits the basic shape outlined by the points. Unicreate activity is stood for by a straight line on a position-time graph. The straight line passes through all the plotted points. A right line passing via the plotted data suggests unicreate activity.


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See page 351

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22 Graphing activity Is this Uniform or ununiformed motion?

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23 Graphing motion Is this Uniform or ununicreated motion?

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24 Graphing movement Is this Unidevelop or ununiformed motion?

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25 Graphing motion Is this Unidevelop or ununiformed motion?What is happening to this object as time increases?

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26 Slope The slope of a graph refers to whether a line is horizontal or goes up or down at an angle. Optimistic slope Slants approximately the right Indicates motion in the direction of the positive y axis Learning check: offer me an instance of on object that would have this form of graph/slope See pperiods

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27 Slope Zero slope Horizontal lineIndicates that the object is stationary Learning check: provide me an instance of on object that would certainly have actually this type of graph/slope See pages

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28 Slope Negative slope Slants dvery own to the rightIndicates motion in the direction of the negative y axis Learning check: give me an instance of on object that would have actually this kind of graph/slope See pages

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