Presentation ~ above theme: "DESCRIBING POSITION how would you define where friend are ideal now?"— Presentation transcript:

1 describing POSITION how would you define where girlfriend are right now? Each summary states your location relative to a details point.

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2 DESCRIBING position A Reference suggest is the starting point you choose to describe the location, or position of one object. A position is one object’s distance and direction from a referral point. A finish description of your position consists of a distance, a direction and a referral point.

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3 DESCRIBING motion Describing position in 2 DimensionsSometimes you need to define an object’s place using more than one reference direction. As soon as you define a position using two directions, you room using 2 dimensions.

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4 DESCRIBING activity Describing position in two DimensionsExamples of reference directions: north, south, east, west, right, left, up, down.

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5 DESCRIBING activity Locating a position in two DimensionsFinding a place in two dimensions is comparable to recognize a position in one dimension. First, pick a reference point. Next, specify direction (north and also east).

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6 DESCRIBING activity Locating a position in 2 DimensionsThen, identify the distance along each reference direction. Dimension.- street or length measured in one direction.

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7 DESCRIBING movement Describing alters in PositionSometimes you require to define how one object’s position changes. Motion.- indigenous latin motere, way «to move». Is the procedure of transforming position.

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8 DESCRIBING activity Motion loved one to a reference Point.

You are watching: How can you describe the position of an object in two dimensions?

An object is in activity if that is position alters relative to a referral point. Based upon Fig. 4 from web page 13 the guy in the boat is no in activity compare come his recognize pole.

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9 DESCRIBING movement Motion family member to a reference Point.He is in motion compared to the buoy since the man’s street from the buoy changes.

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10 DESCRIBING motion Motion loved one to a reference Point.Quantities Scalar amount Vector Quantity has magnitud and unit e.g. 10 m has magnitud, unit and direction e.g. 10 m north

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11 DESCRIBING movement Distance and DisplacementDistance defines how far an item has moved, distance counts on the course taken, and it is a scalar quantity.

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12 DESCRIBING movement Distance and also DisplacementDisplacement is the difference in between the early position and final place of an object. Displacement is a vector quantity due to the fact that it has direction

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13 DESCRIBING movement Distance and DisplacementThe distance is the red path. The displacement is the blue arrow.

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14 DESCRIBING activity Distance and also Displacement1 kilometres HOUSE beginning Point 0.5 km SCHOOL Ending point 1 km The car’s displacement to be 0.5 km to the southern The street traveled was 2.5 km

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15 DESCRIBING movement Distance and DisplacementExamples: Sandra runs 2.5 kilometres every work The following mall is just 1 kilometres away My home is 10 miles far Susan walks 200 m come the south Alberto is 10,000 mile north indigenous his residence 10 kilometres north, 5 km west

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16 DESCRIBING movement Distance and DisplacementStudents will analyze the figure 5 from web page 13. HW based on figure 5. What is the distance and also the displacement as soon as a player runs to third base?

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17 SPEED and VELOCITY Speed and VelocityImagine that you space traveling in a automobile at 80 Km/h. Deserve to we say that is rate or velocity?

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18 SPEED and also VELOCITY SpeedSpeed is a measure up of the distance things travels per unit that time. That is a scalar quantity. Speed = distance v= d Time t v=speed= m/s, Km/h, mph d=distance=m, Km, mile t= time=min, hr, s

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19 SPEED and VELOCITY SpeedConstant rate is is the price of readjust of position in i m sorry the very same distance is traveled, see Fig. 6 Instantaneous speed is speed at a details instant in time.

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20 SPEED and also VELOCITY SpeedAverage speed is the full distance traveled divided by the total time required to travel the distance.

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21 SPEED and VELOCITY SpeedExample sphere 3m 8m 16m elevator 1 sec A 2 s B 3 s C The instantaneus rate for A is 3 m/s The instantaneous rate for B is 8m= 4m/s 2s The median speed is same to 16m = 5.3 m/s 3

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22 SPEED and also VELOCITY VelocityVelocity includes the rate of an object and the direction of its motion. That is a vector quantity. Example: 2 auto with the exact same speed (50Km/h) have various velocities if the space traveling at various directions 50 km/h

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23 SPEED and VELOCITY median SpeedExample: Melissa shooting a version rocket 360m into the air. It take it the rocket 4 s to fly that far. What is the average speed that the rocket? Distance: d=360m Time: t=4s v=d/t =360m/4s v= 90m/s Answer: The typical speed was 90 m/s

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24 SPEED and VELOCITY HomeworkIt bring away Ahmed 50 s on his bike to with his friend’s house 250 m away. What is his typical speed? A Truck makes a expedition that consists 2,380 kilometres in 28 hours. What is the driver’s mean speed? v= d t

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25 REVIEW scientific NotationThe number needs to be in between 1 and 10 If the exponent is negative, the number is tiny ( If the exponent is positive, the number is big (>1) The exponent is the variety of places you moved the decimal point, not the number of zeros. Example: 2.8x107 = 28,000,000 2.8x10-7=

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26 testimonial Percent Error the is the expression that error as a portion of accepted value. Formula: speculative value – accepted value x 100% embraced value speculative value=97.5 C welcomed value= 100 C ( ) x100% = 2.5% 100

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27 REVIEW experimental GroupsThe experimental group is offered to study just how a readjust in the elevation variable changes the dependence variable.

See more: What Does The Name Ericka Mean Ing And Origin, What Is The Meaning Of The Name Ericka

Example: friend might set up an experiment to recognize which that the 3 fertilizers helps plants to thrive up the biggest.

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28 REVIEW experimental GroupsIndependent change Dependent variable Constants Plants form of plant soil Amount the water Fertilizers expansion 1 Oak Clay 50 gallons A 2.0 centimeter 2 B 2.5 cm 3 C 3.0 centimeter 4 no one 1.5 centimeter Experi-mental Group control Group

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