## 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.

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.

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.

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

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).

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

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.

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.

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.

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

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.

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

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

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

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

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?

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?

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

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.

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

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

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

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

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

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=

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

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.

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