1. Physics
Unit Introduction

2. Lesson 2.1 – The Language of Motion
Physics
Lesson 2.1 – The Language of Motion

3. 1. Physics is the study of matter and how it moves.
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
1. Physics is the study of matter and how it moves.
Newton Pendulum – just focus on how physics can explain why this moves the way that it does.
Milky Way – Connect back to Space Unit. What is the galaxy that contains our solar system? How long ago did the Universe form? Physics can explain why all the stars in the Milky Way move the way they do.

4. 2. The total amount an object moves can be described in two ways:
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
2. The total amount an object moves can be described in two ways:
a. Distance – a scalar quantity telling how much total “ground” an object has covered.
A scalar is a number alone without a direction.
Practice problem. Explain a coach starts at A and walks to B, then C, then D. Calculate the total distance covered.
A to B: 35 yds
B to C: 20 yds
C to D: 40 yds
Distance: 95 yds

5. A vector is a number with a direction
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
b. Displacement – a vector quantity that refers to how far an objects ends from where it started
A vector is a number with a direction
Practice problem. Explain a coach starts at A and walks to B, then C, then D. Calculate the displacement. Only compare where he/she starts with where he/she ends.
Start: 60 yards
End: 5 yards
Displacement: 55 yards left

6. I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
c. A student walks the pathway shown in the diagram to the right, determine:
Distance:
Displacement:
Distance: = 12 meters
Displacement: 0 meters

7. 1. The rate at which an object moves is also described in two ways:
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
1. The rate at which an object moves is also described in two ways:
a. Speed – a scalar quantity telling how fast an object moves
Does not include a direction.
b. Velocity - a vector quantity telling how fast an object changes position.
Must include a direction.

8. Velocity= displacement time Speed = distance time
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
Velocity= displacement time
Speed = distance time

9. WORK WITH US…NOT AHEAD OF US!
Guided Practice
WORK WITH US…NOT AHEAD OF US!

10. I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
Guided Practice
1. A cross country runner leaves school and runs 10 miles north and turns around, returning to school. What distance did the student run? What was the student’s displacement?

11. I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
Guided Practice
2. A car leaves Cleveland and drives 10 miles south to Shaw. It turns around and drives 5 miles north to Boyle. What was the distance that the car traveled and what is its displacement?

12. I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
Guided Practice
3. Using the values for displacement and distance determined in #2, what was the car’s velocity if the car was traveling for 1 hour?

13. I-N-D-E-P-E-N-D-E-N-T PRACTICE
I can describe physics and terminology used to describe the motion of an object (kinematics). (2c)
I-N-D-E-P-E-N-D-E-N-T PRACTICE
Do you know what that means?

14. Exit Ticket
(5 Questions)

15. Velocity Displacement Speed Distance
1. Which TWO choices can measure how far an object has moved?
Velocity
Displacement
Speed
Distance

16. Velocity Displacement Vector Scalar
2. Which term below describes a value without a direction?
Velocity
Displacement
Vector
Scalar

17. 3. A student runs laps around a circular track that is one mile in length. If she runs four laps, what is the distance she ran?
0 miles
1 mile
4 miles
8 miles

18. 12 miles east 12 miles 8 miles east 8 miles
4. A runner jogs 10 miles east turns around and jogs two miles west back to a friend’s house. What is his displacement?
12 miles east
12 miles
8 miles east
8 miles

19. 100 miles hour 100 miles hour north 50 miles hour 50 miles hour north
5. A car travels for one hour and has a displacement of 50 miles north and traveled a distance of 100 miles. Which of these describes the velocity of the car?
100 miles hour
100 miles hour north
50 miles hour
50 miles hour north