## 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 Dimensions**Sometimes 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 Dimensions**Examples of reference directions: north, south, east, west, right, left, up, down.

5 **DESCRIBING activity Locating a position in two Dimensions**Finding 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 Dimensions**Then, identify the distance along each reference direction. Dimension.- street or length measured in one direction.

7 **DESCRIBING movement Describing alters in Position**Sometimes 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 Displacement**Distance 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 Displacement**Displacement 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 Displacement**The distance is the red path. The displacement is the blue arrow.

14 **DESCRIBING activity Distance and also Displacement**1 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 Displacement**Examples: 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 Displacement**Students 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 Velocity**Imagine 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 Speed**Speed 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 Speed**Constant 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 Speed**Average speed is the full distance traveled divided by the total time required to travel the distance.

21 **SPEED and VELOCITY Speed**Example 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 Velocity**Velocity 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 Speed**Example: 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 Homework**It 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 Notation**The 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 Groups**The experimental group is offered to study just how a readjust in the elevation variable changes the dependence variable.

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

28 **REVIEW experimental Groups**Independent 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