forces - deer valley unified school district...2/21/2017 4 unbalanced forces unbalanced forces •an...
TRANSCRIPT
![Page 1: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/1.jpg)
2/21/2017
1
Tuesday, February 21Today – write in your agenda
Tuesday, Wednesday, Thursday – Complete Key Concepts Quiz #3 –
due Friday by 2:45pm
Socrative.com
SCIENCERICE
Sign in: last name first name (example: Young Kody)
Mission: We will be incredible
science students.
What is a force and how does it affect
the motion of an object?
Today we will…
-Identify the conditions under which an
object will continue with same motion
or change motion
• Go over key concepts quiz #2 from last week
• If you don’t understand a question, make sure
to ask (you may see these questions again)
• Read pages 41-44 about forces
Add to your table of contents
Date Title Page #
2/21 Forces notes
Forces
![Page 2: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/2.jpg)
2/21/2017
2
Forces
Net force
Unbalanced force
Balanced force
Look for the secret apple. As
soon as you see it, stand up and
say “Newton”
“Newton”
A force is a push
or a pull
![Page 3: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/3.jpg)
2/21/2017
3
Forces are measured in Newtons
(N)
Examples: Contact, gravity,
friction
Like velocity and acceleration,
forces are described not only by
how strong they are, but also by the
direction in which they act
Force is a vector
Net Force
•The overall force on an
object after all of the
forces have been added
together
A
C
B
The net force is pushing to the right
The net force is pushing to the left
The net force is 0
![Page 4: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/4.jpg)
2/21/2017
4
Unbalanced
Forces
Unbalanced Forces
•An unbalanced force can
cause an object to start
moving, stop moving, or
change direction (which is
acceleration)
Unbalanced Forces
•An unbalanced force
acting on an object will
change the object’s
motion
Unbalanced Forces
•When there is a net
force acting on an
object, the force is said
to be unbalanced.
A
B
The net force is pushing to the right
The net force is pushing to the left
Unbalanced Forces
![Page 5: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/5.jpg)
2/21/2017
5
Balanced Forces Balanced Forces
•Equal forces acting on an
object in opposite
directions
Balanced Forces
•Balanced forces acting on
an object will not change
the object’s motion
Balanced Forces
•When you add equal forces
exerted in opposite
directions, the net force is
zero
![Page 6: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/6.jpg)
2/21/2017
6
C The net force is 0
Balanced Forces
The forces cancel each other
Isaac Newton
As you listen, think
about how science
is a human
endeavor
![Page 7: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/7.jpg)
2/21/2017
1
Tuesday, February 21Today – write in your agenda
Tuesday, Wednesday, Thursday – Complete Key Concepts Quiz #3 –
due Friday by 2:45pm
Socrative.com
SCIENCERICE
Sign in: last name first name (example: Young Kody)
Mission: We will be incredible
science students.
What is a force and how does it affect
the motion of an object?
Today we will…
-Identify the conditions under which an
object will continue with same motion
or change motion
• Go over key concepts quiz #2 from last week
• If you don’t understand a question, make sure
to ask (you may see these questions again)
• Read pages 41-44 about forces
Add to your table of contents
Date Title Page #
2/21 Forces notes
Forces
![Page 8: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/8.jpg)
2/21/2017
2
Forces
Net force
Unbalanced force
Balanced force
Look for the secret apple. As
soon as you see it, stand up and
say “Newton”
“Newton”
A force is a push
or a pull
![Page 9: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/9.jpg)
2/21/2017
3
Forces are measured in Newtons
(N)
Examples: Contact, gravity,
friction
Like velocity and acceleration,
forces are described not only by
how strong they are, but also by the
direction in which they act
Force is a vector
Net Force
•The overall force on an
object after all of the
forces have been added
together
A
C
B
The net force is pushing to the right
The net force is pushing to the left
The net force is 0
![Page 10: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/10.jpg)
2/21/2017
4
Unbalanced
Forces
Unbalanced Forces
•An unbalanced force can
cause an object to start
moving, stop moving, or
change direction (which is
acceleration)
Unbalanced Forces
•An unbalanced force
acting on an object will
change the object’s
motion
Unbalanced Forces
•When there is a net
force acting on an
object, the force is said
to be unbalanced.
A
B
The net force is pushing to the right
The net force is pushing to the left
Unbalanced Forces
![Page 11: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/11.jpg)
2/21/2017
5
Balanced Forces Balanced Forces
•Equal forces acting on an
object in opposite
directions
Balanced Forces
•Balanced forces acting on
an object will not change
the object’s motion
Balanced Forces
•When you add equal forces
exerted in opposite
directions, the net force is
zero
![Page 12: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/12.jpg)
2/21/2017
6
C The net force is 0
Balanced Forces
The forces cancel each other
Isaac Newton
As you listen, think
about how science
is a human
endeavor
![Page 13: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/13.jpg)
2/21/2017
1
Tuesday, February 21Today – write in your agenda
Tuesday, Wednesday, Thursday – Complete Key Concepts Quiz #3 –
due Friday by 2:45pm
Socrative.com
SCIENCERICE
Sign in: last name first name (example: Young Kody)
Mission: We will be incredible
science students.
What is a force and how does it affect
the motion of an object?
Today we will…
-Identify the conditions under which an
object will continue with same motion
or change motion
• Go over key concepts quiz #2 from last week
• If you don’t understand a question, make sure
to ask (you may see these questions again)
• Read pages 41-44 about forces
Add to your table of contents
Date Title Page #
2/21 Forces notes
Forces
![Page 14: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/14.jpg)
2/21/2017
2
Forces
Net force
Unbalanced force
Balanced force
Look for the secret apple. As
soon as you see it, stand up and
say “Newton”
“Newton”
A force is a push
or a pull
![Page 15: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/15.jpg)
2/21/2017
3
Forces are measured in Newtons
(N)
Examples: Contact, gravity,
friction
Like velocity and acceleration,
forces are described not only by
how strong they are, but also by the
direction in which they act
Force is a vector
Net Force
•The overall force on an
object after all of the
forces have been added
together
A
C
B
The net force is pushing to the right
The net force is pushing to the left
The net force is 0
![Page 16: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/16.jpg)
2/21/2017
4
Unbalanced
Forces
Unbalanced Forces
•An unbalanced force can
cause an object to start
moving, stop moving, or
change direction (which is
acceleration)
Unbalanced Forces
•An unbalanced force
acting on an object will
change the object’s
motion
Unbalanced Forces
•When there is a net
force acting on an
object, the force is said
to be unbalanced.
A
B
The net force is pushing to the right
The net force is pushing to the left
Unbalanced Forces
![Page 17: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/17.jpg)
2/21/2017
5
Balanced Forces Balanced Forces
•Equal forces acting on an
object in opposite
directions
Balanced Forces
•Balanced forces acting on
an object will not change
the object’s motion
Balanced Forces
•When you add equal forces
exerted in opposite
directions, the net force is
zero
![Page 18: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/18.jpg)
2/21/2017
6
C The net force is 0
Balanced Forces
The forces cancel each other
Isaac Newton
As you listen, think
about how science
is a human
endeavor
![Page 19: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/19.jpg)
2/21/2017
1
Tuesday, February 21Today – write in your agenda
Tuesday, Wednesday, Thursday – Complete Key Concepts Quiz #3 –
due Friday by 2:45pm
Socrative.com
SCIENCERICE
Sign in: last name first name (example: Young Kody)
Mission: We will be incredible
science students.
What is a force and how does it affect
the motion of an object?
Today we will…
-Identify the conditions under which an
object will continue with same motion
or change motion
• Go over key concepts quiz #2 from last week
• If you don’t understand a question, make sure
to ask (you may see these questions again)
• Read pages 41-44 about forces
Add to your table of contents
Date Title Page #
2/21 Forces notes
Forces
![Page 20: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/20.jpg)
2/21/2017
2
Forces
Net force
Unbalanced force
Balanced force
Look for the secret apple. As
soon as you see it, stand up and
say “Newton”
“Newton”
A force is a push
or a pull
![Page 21: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/21.jpg)
2/21/2017
3
Forces are measured in Newtons
(N)
Examples: Contact, gravity,
friction
Like velocity and acceleration,
forces are described not only by
how strong they are, but also by the
direction in which they act
Force is a vector
Net Force
•The overall force on an
object after all of the
forces have been added
together
A
C
B
The net force is pushing to the right
The net force is pushing to the left
The net force is 0
![Page 22: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/22.jpg)
2/21/2017
4
Unbalanced
Forces
Unbalanced Forces
•An unbalanced force can
cause an object to start
moving, stop moving, or
change direction (which is
acceleration)
Unbalanced Forces
•An unbalanced force
acting on an object will
change the object’s
motion
Unbalanced Forces
•When there is a net
force acting on an
object, the force is said
to be unbalanced.
A
B
The net force is pushing to the right
The net force is pushing to the left
Unbalanced Forces
![Page 23: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/23.jpg)
2/21/2017
5
Balanced Forces Balanced Forces
•Equal forces acting on an
object in opposite
directions
Balanced Forces
•Balanced forces acting on
an object will not change
the object’s motion
Balanced Forces
•When you add equal forces
exerted in opposite
directions, the net force is
zero
![Page 24: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/24.jpg)
2/21/2017
6
C The net force is 0
Balanced Forces
The forces cancel each other
Isaac Newton
As you listen, think
about how science
is a human
endeavor
![Page 25: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/25.jpg)
2/21/2017
1
Tuesday, February 21Today – write in your agenda
Tuesday, Wednesday, Thursday – Complete Key Concepts Quiz #3 –
due Friday by 2:45pm
Socrative.com
SCIENCERICE
Sign in: last name first name (example: Young Kody)
Mission: We will be incredible
science students.
What is a force and how does it affect
the motion of an object?
Today we will…
-Identify the conditions under which an
object will continue with same motion
or change motion
• Go over key concepts quiz #2 from last week
• If you don’t understand a question, make sure
to ask (you may see these questions again)
• Read pages 41-44 about forces
Add to your table of contents
Date Title Page #
2/21 Forces notes
Forces
![Page 26: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/26.jpg)
2/21/2017
2
Forces
Net force
Unbalanced force
Balanced force
Look for the secret apple. As
soon as you see it, stand up and
say “Newton”
“Newton”
A force is a push
or a pull
![Page 27: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/27.jpg)
2/21/2017
3
Forces are measured in Newtons
(N)
Examples: Contact, gravity,
friction
Like velocity and acceleration,
forces are described not only by
how strong they are, but also by the
direction in which they act
Force is a vector
Net Force
•The overall force on an
object after all of the
forces have been added
together
A
C
B
The net force is pushing to the right
The net force is pushing to the left
The net force is 0
![Page 28: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/28.jpg)
2/21/2017
4
Unbalanced
Forces
Unbalanced Forces
•An unbalanced force can
cause an object to start
moving, stop moving, or
change direction (which is
acceleration)
Unbalanced Forces
•An unbalanced force
acting on an object will
change the object’s
motion
Unbalanced Forces
•When there is a net
force acting on an
object, the force is said
to be unbalanced.
A
B
The net force is pushing to the right
The net force is pushing to the left
Unbalanced Forces
![Page 29: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/29.jpg)
2/21/2017
5
Balanced Forces Balanced Forces
•Equal forces acting on an
object in opposite
directions
Balanced Forces
•Balanced forces acting on
an object will not change
the object’s motion
Balanced Forces
•When you add equal forces
exerted in opposite
directions, the net force is
zero
![Page 30: Forces - Deer Valley Unified School District...2/21/2017 4 Unbalanced Forces Unbalanced Forces •An unbalanced force can cause an object to start moving, stop moving, or change direction](https://reader036.vdocuments.us/reader036/viewer/2022063021/5fe4eef9f6fd0176d55dfd2f/html5/thumbnails/30.jpg)
2/21/2017
6
C The net force is 0
Balanced Forces
The forces cancel each other
Isaac Newton
As you listen, think
about how science
is a human
endeavor