1. Do Now Answer the following questions on your Daily Organizer:
What is our acceleration when we have free fall?
What is the initial velocity of a penny that is dropped off the Empire State Building?
A squirrel drops an acorn off a tree.
How fast is it going after 2.4 seconds?
How far has it traveled at that time?

2. Today’s Agenda Do Now Important Dates Quiz Overview
5 min
Do Now
Important Dates
Quiz Overview
40 min
Free Fall Acceleration
Exit Ticket

3. Today’s Agenda Do Now Important Dates Quiz Overview
5 min
Do Now
Important Dates
Quiz Overview
40 min
Free Fall Acceleration
Exit Ticket

4. Important Dates & Reminders
Welcome Back 
New Quarter  New Opportunity!
Homework This Week
Extra Credit for Quarter 2
Will ONLY be through Science Madness
Friday: Background Research w/ Bibliography
Grades Slips
All grades updated in TeacherEase & provided to you
Tutoring today from 4 – 5 PM

5. Today’s Agenda Do Now Important Dates Quiz Overview
5 min
Do Now
Important Dates
Quiz Overview
40 min
Free Fall Acceleration
Exit Ticket

6. Today’s Agenda Do Now Important Dates Quiz Overview
5 min
Do Now
Important Dates
Quiz Overview
40 min
Free Fall Acceleration
Exit Ticket

7. Free Fall
Free fall is when objects are traveling in the air and the only force acting on them is gravity
Acceleration is constant for the entire fall
Acceleration due to gravity & has a value of -9.8 m/s2
Negative for downwards acceleration

8. Free Fall
For a ball tossed upward, make predictions for the sign of the velocity and acceleration to complete the chart.
Velocity
(+, -, or zero)
Acceleration
When halfway up
When at the peak
When halfway down + -
zero
can also demonstrate the motion for students. Toss a ball up and catch it. Ask students to focus on the spot half-way up and observe the motion at that time. They can then predict the sign for the velocity and acceleration at that point. Then ask students to focus on the peak and, finally, on a point half-way down.
Often students believe the acceleration at the top is zero because the velocity is zero. Point out to them that acceleration is not velocity, but changing velocity. At the top, the velocity is changing from + to -.
Ask students to explain each combination above. For example, a positive velocity (moving upward) and a negative acceleration (downward) would cause the velocity to decrease.

9. Important Equations for Unit
Acceleration, Final Velocity, Time
Distance
a = VF – VI t
d = Vit + ½ at2

10. Finding VF
We can find final velocity the same exact way we have been finding it this whole week. Now, we always know that the acceleration for a falling object is -9.8 m/s2.
If you see an object is FALLING, I don’t have to write the acceleration. You should automatically know it.
If an object is DROPPED, it’s initial velocity is zero.
If an object is THROWN UP, it does have some initial velocity and I would have to give it to you for you to find final velocity.

11. Example: Finding VF
Mickie dropped a book off of a building. How fast is it going after 1.7 seconds?

12. Example: Finding VF
Mickie dropped a book off of a building. How fast is it going after 1.7 seconds?
What is acceleration?
What is initial velocity?

13. Example: Finding VF
Mickie dropped a book off of a building. How fast is it going after 1.7 seconds?
What is acceleration? m/s2
What is initial velocity? 0 m/s

14. Example: Finding VF -9.8 m/s2 = VF – 0 m/s
Mickie dropped a book off of a building. How fast is it going after 1.7 seconds?
What is acceleration? m/s2
What is initial velocity? 0 m/s
-9.8 m/s2 = VF – 0 m/s
1.7 s

15. Example: Finding VF -9.8 m/s2 = VF – 0 m/s
Mickie dropped a book off of a building. How fast is it going after 1.7 seconds?
What is acceleration? m/s2
What is initial velocity? 0 m/s
-9.8 m/s2 = VF – 0 m/s
1.7 s
VF =
-16.7 m/s

16. Example: Finding VF
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. What is its velocity after 3.1 s?

17. Example: Finding VF
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. What is its velocity after 3.1 s?
What is the acceleration?
What is the initial velocity?

18. Example: Finding VF
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. What is its velocity after 3.1 s?
What is the acceleration? m/s2
What is the initial velocity? 17 m/s

19. Example: Finding VF -9.8 m/s2 = VF – 17 m/s
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. What is its velocity after 3.1 s?
What is the acceleration? m/s2
What is the initial velocity? 17 m/s
-9.8 m/s2 = VF – 17 m/s
3.1 s

20. Example: Finding VF -9.8 m/s2 = VF – 17 m/s
Jonathan kicks a soccer ball upward giving it an initial velocity of 14 m/s. What is its velocity after 3.1 s?
What is the acceleration? m/s2
What is the initial velocity? 17 m/s
-9.8 m/s2 = VF – 17 m/s
3.1 s
VF =
-13.4 m/s

21. Finding Distance Traveled
We can also find the distance an object travels knowing the acceleration, initial velocity and time using this equation:
d = Vit + ½ at2

22. Example: Distance Traveled
Mickie dropped a book off of a building. How far has it fell after 1.7 seconds?
d = Vit + ½ at2

23. Example: Distance Traveled
Mickie dropped a book off of a building. How far has it fell after 1.7 seconds?
d = (0 m/s)(1.7 s) + ½ (-9.8 m/s2)(1.7 s)2
d = Vit + ½ at2

24. Example: Distance Traveled
Mickie dropped a book off of a building. How far has it fell after 1.7 seconds?
d = (0 m/s)(1.7 s) + ½ (-9.8 m/s2)(1.7 s)2
d = Vit + ½ at2

25. Example: Distance Traveled
Mickie dropped a book off of a building. How far has it fell after 1.7 seconds?
d = (0 m/s)(1.7 s) + ½ (-9.8 m/s2)(1.7 s)2
d = ½ (-9.8 m/s2)(1.7 s)2
d = Vit + ½ at2

26. Example: Distance Traveled
Mickie dropped a book off of a building. How far has it fell after 1.7 seconds?
d = (0 m/s)(1.7 s) + ½ (-9.8 m/s2)(1.7 s)2
d = ½ (-9.8 m/s2)(1.7 s)2 d = m
d = Vit + ½ at2

27. Example: Distance Traveled
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. How high above the ground is it after 3.1 seconds?
d = Vit + ½ at2

28. Example: Distance Traveled
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. How high above the ground is it after 3.1 seconds?
d = (17 m/s)(3.1 s) + ½ (-9.8 m/s2)(3.1 s)2
d = Vit + ½ at2

29. Example: Distance Traveled
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. How high above the ground is it after 3.1 seconds?
d = (17 m/s)(3.1 s) + ½ (-9.8 m/s2)(3.1 s)2
d = 52.7 m + ½ (-9.8 m/s2)(3.1 s)2
d = Vit + ½ at2

30. Example: Distance Traveled
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. How high above the ground is it after 3.1 seconds?
d = (17 m/s)(3.1 s) + ½ (-9.8 m/s2)(3.1 s)2
d = 52.7 m + ½ (-9.8 m/s2)(3.1 s)2
d = 52.7 m m
d = Vit + ½ at2

31. Example: Distance Traveled
Jonathan kicks a soccer ball upward giving it an initial velocity of 17 m/s. How high above the ground is it after 3.1 seconds?
d = (17 m/s)(3.1 s) + ½ (-9.8 m/s2)(3.1 s)2
d = 52.7 m + ½ (-9.8 m/s2)(3.1 s)2
d = 52.7 m m d = 5.6 m
d = Vit + ½ at2

32. Guided Practice
We’re going to do a mix of games for guided practice today 
Tag Team
Multiple Choice
Teacher Vs. Class

33. Tag Team 1: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, initial velocity and final velocity of the ball. Write the equation to find a.
Partner 2: Using that, find the time it took to reach the maximum height.

34. Tag Team 1: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, initial velocity and final velocity of the ball. Write the equation to find a.
Acceleration = -9.8 m/s2
Initial Velocity = 7 m/s
Final Velocity = 0 m/s (at the peak, it stops)
Partner 2: Using that, find the time it took to reach the maximum height.

35. Tag Team 1: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, initial velocity and final velocity of the ball. Write the equation to find a.
Acceleration = -9.8 m/s2
Initial Velocity = 7 m/s
Final Velocity = 0 m/s (at the peak, it stops)
Partner 2: Using that, find the time it took to reach the maximum height t = 0.71 seconds

36. Tag Team 2: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, time it took to reach the top & initial velocity. Write the distance equation.
Partner 2: Using that, find the height the ball reached.

37. Tag Team 2: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, time it took to reach the top & initial velocity. Write the distance equation.
Acceleration = -9.8 m/s2
Time = 0.71 seconds
Initial Velocity = 7 m/s
Partner 2: Using that, find the height the ball reached.

38. Tag Team 2: Finding VF and d
A ball is thrown straight upward with an initial velocity of 7 m/s. How long does it take it to reach its maximum height? What is the maximum height the ball reaches?
Partner 1: Write the acceleration, time it took to reach the top & initial velocity. Write the distance equation.
Acceleration = -9.8 m/s2
Time = 0.71 seconds
Initial Velocity = 7 m/s
Partner 2: Using that, find the height the ball reached.
Height = 4.97 m = 2.5 m

39. MC 1
Anatole drops a CD off of a cliff. How fast is it going after 2.7 seconds?
0 m/s
2.7 m/s
3.6 m/s
26.5 m/s

40. MC 1 Answer
Anatole drops a CD off of a cliff. How fast is it going after 2.7 seconds?
0 m/s
2.7 m/s
3.6 m/s
26.5 m/s

41. MC 2
Entrée throws a football straight upwards with an initial velocity of 15 m/s. How fast is the can going after 3 seconds?
-9.8 m/s
-14.4 m/s
-29.4 m/s
-44.4 m/s

42. MC 2 Answer
Entrée throws a football straight upwards with an initial velocity of 15 m/s. How fast is the can going after 3 seconds?
-9.8 m/s
-14.4 m/s
-29.4 m/s
-44.4 m/s

43. MC 3
A penny is dropped from the top of a tall building. It hits the ground after 5 seconds. How far did the penny fall?
-24.5 m
-49.0 m m m

44. MC 3 Answer
A penny is dropped from the top of a tall building. It hits the ground after 5 seconds. How far did the penny fall?
-24.5 m
-49.0 m m m

45. MC 4
A frisbee is thrown straight upward with an initial velocity of 11 m/s. What is its distance in the air after 1.5 seconds?
5.5 m
11.0 m
16.5 m
27.5 m

46. MC 4 Answer
A frisbee is thrown straight upward with an initial velocity of 11 m/s. What is its distance in the air after 1.5 seconds?
5.5 m
11.0 m
16.5 m
27.5 m

47. Teacher vs. Class
One brave soul will make up one problem that will ask us to find the FINAL VELOCITY, TIME or DISTANCE. Anyone that can beat me in solving the problem will get 5 raffle tickets.

48. Independent Practice
On your tables is a Tic-Tac-Toe game. You must do at least two rows, columns or diagonals. You are to work on these independently and write answers and work on your Daily Organizers.

49. Today’s Agenda Do Now Important Dates Quiz Overview
5 min
Do Now
Important Dates
Quiz Overview
40 min
Free Fall Acceleration
Exit Ticket

50. Exit Ticket
These are to see how well you did on today’s material. As always, this helps me see what we need to review for the next day so do your best 