newton's laws of motion - mrs. jana young -...
TRANSCRIPT
Newton's Laws of MotionPresented by Kesler Science
1. What are Newton's Laws of Motion?2. How do Newton's Laws of Motion
apply to sports activities, amusement park rides, Earth’s tectonic forces, and rocket launches?
Essential Questions:
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Force
Acceleration
Velocity
Speed
Unbalanced
Force
Friction
Net Force
Balanced Force
Applied Force
Quick Action – INB Template
Directions for INB Template
1. Fold the paper along the
dotted line.
2. Cut on the lines between
each word up to the
dotted line.
3. Paste the blank half of the
page into your Interactive
Notebook (page 33).
Force
•A push or a pull on an object
•Causes a change in the motion of an object
•An object’s mass multiplied by acceleration (F=ma)
•Measured in Newtons (N)
Newton's Laws of Motion
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Balanced Force
• Two forces acting in opposite directions on an object, and equal in size
•Object stays still or continues moving at the same speed and in the same direction
Newton's Laws of Motion
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10N
12N
10N
12N
Unbalanced Forces
•Causes a change in motion of an object
•Causes acceleration
Newton's Laws of Motion
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Net Force
•The combination of all forces on an object
•Measured in Newtons (N)
Newton's Laws of Motion
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14N 10N
Net Force = 4N
1. Get with a partner
2. The teacher will assign each pair a topic: balanced force, unbalanced force, or net force.
3. The students will demonstrate their understanding of the concept to which they have been assigned.
4. The students can use props in the room or the white board to explain their type of force to the class. Get creative!
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Quick Action – Forces Model
Friction
• The force that causes a moving object to slow down when it touches another object
•One object rubbing against another
Newton's Laws of Motion
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Speed• Speed is a way of measuring how quickly something is moving or being done.
• Ex. - A motorcycle going 55 miles per hour
• Ex. – Sweeping the floor for 5 minutes
Newton's Laws of Motion
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Velocity
The rate at which an object changes position in a specific direction
Ex: 35mph west
Newton's Laws of Motion
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AccelerationThe rate at which an object changes its speed or direction (speeding up, slowing down, or changing direction)
Ex.1 – Downhill on a rollercoaster
Ex.2 – Uphill on a rollercoaster
Ex.3 - Turning a corner even if your speed stays the same
Newton's Laws of Motion
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Applied ForceA force that is applied to an object by a person or another object
Ex. – A person pushing a box up a ramp
Ex. – A bulldozer moving dirt
Newton's Laws of Motion
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Quick Action – Match the words with the
definition
A.65 mph north
B. 10 miles per hour
C. Rubbing hands
together to warm them
D. Turning a corner but
not speeding up
E. Pushing a bike up a hill
1. Friction
2. Speed
3. Velocity
4. Acceleration
5. Applied force
Sir Isaac Newton
Newton’s
First Law
Newton’s
Third Law
Newton’s
Second Law
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3. Paste them into your INB
(page 33) along the
skinny tabs so that pages
open from the center.
Sir Isaac Newton
•An English physicist and mathematician in the1600’s
•One of the most influential scientists of all time
• Formulated the three basic laws of motion (Newton's Laws of Motion)
Newton's Laws of Motion
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Newton’s First Law or Law of Inertia• Inertia – a tendency to
do nothing or remain unchanged
• An object at rest tends to stay at rest unless acted on by an unbalanced force.
Ex. - Sitting on a couch
Newton's Laws of Motion
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Goes on flap or on page 34
Newton’s First Law (Cont.)
An object in motion tends to stay in motion with the same speed and direction until acted on by an unbalanced force.
Ex. - A satellite orbiting Earth
Newton's Laws of Motion
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Goes on flap or on page 34
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Paste this section under
adjacent triangle
Inertia
Fric
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Newton’s First
Law
List som
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Ne
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1st
Law
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Directions for INB Template
1. Cut out the INB template.
2. Do not cut any of the
dashed lines.
3. Paste them into your INB
(page 34) along the
skinny tab.
Newton’s Second Law or Law of Force and Acceleration
Newton's Laws of Motion
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The acceleration (A) of an
object is dependent upon
two variables
a. the net force (F)
b. the mass of the
object (M)
m
F
aX
Goes on flap or on page 35
Newton’s Second Law (cont.)
Newton's Laws of Motion
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• Acceleration is produced
when a force acts on a mass.
• The greater the mass of the
object being accelerated the
greater the amount of force
needed to accelerate the
object.
m
F
aX
Goes on flap or on page 35
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Directions for INB Template
1. Cut out the INB template.
2. Do not cut any of the
dashed lines.
3. Paste it into your INB
(page 35) so that the
flaps open like a book.
Newton’s Third Law or the Law of Action/Reaction
• For every action there is an equal and opposite reaction.
• Ex. – A rocket taking off
Newton's Laws of Motion
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Goes on flap or on page 36
Newton’s Third Law (Cont.)
How does Newton’s Third Law relate to the Earth’s plate movements?
Unbalanced forces create earthquakes, volcanoes, rift valleys and other geological features when plate are under tension.
Newton's Laws of Motion
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Goes on flap or on page 36
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Quick Action – INB Template
Directions for INB Template
1. Cut out the INB template.
2. Only cut the outside lines.
3. Paste it into your INB
(page 36) along the
skinny tab.
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Quick Action – INB Template
Directions for INB Template
1. Cut out the INB
templates.
2. Do not cut any of the
dashed lines.
3. Paste the pockets into
your INB (page 37).
4. Sort cards into the correct
pockets.
Check for Understanding
Can you…
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1. Describe Newton's Three Laws of
Motion?
2. Explain how Newton's Laws of
Motion apply to sports activities,
amusements park rides, Earth’s
tectonic activities, and rocket
launches?