practice lesson plan
DESCRIPTION
This is part of practice lesson plan that I'm doing for my teacher certification program.TRANSCRIPT
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Momentum and Collision
Mr. SullivanPre-AP PhysicsGrades 10-12
Thursday, April 14, 2011
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Today’s Objectives
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Today’s ObjectivesUnderstand the ideas of (a) momentum, (b) conservation of momentum, and conversation of momentum in (c) elastic and inelastic collisions.
Thursday, April 14, 2011
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Today’s ObjectivesUnderstand the ideas of (a) momentum, (b) conservation of momentum, and conversation of momentum in (c) elastic and inelastic collisions.
Interpret questions related to real life examples of (a) momentum, (b) conservation of momentum, (c) inelastic collisions, and elastic collisions.
Thursday, April 14, 2011
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Today’s ObjectivesUnderstand the ideas of (a) momentum, (b) conservation of momentum, and conversation of momentum in (c) elastic and inelastic collisions.
Interpret questions related to real life examples of (a) momentum, (b) conservation of momentum, (c) inelastic collisions, and elastic collisions.
Compose a logical procedure to solve for required information from prior questions.
Thursday, April 14, 2011
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Today’s ObjectivesUnderstand the ideas of (a) momentum, (b) conservation of momentum, and conversation of momentum in (c) elastic and inelastic collisions.
Interpret questions related to real life examples of (a) momentum, (b) conservation of momentum, (c) inelastic collisions, and elastic collisions.
Compose a logical procedure to solve for required information from prior questions.
Design and Reconstruct personal examples of momentum, conservation of momentum, inelastic collisions, and elastic collisions.
Thursday, April 14, 2011
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What is Momentum?
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What is Momentum?Momentum is the vector quantity that represents a mass with a velocity at specific moment in time.
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What is Momentum?Momentum is the vector quantity that represents a mass with a velocity at specific moment in time.
Or
Thursday, April 14, 2011
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What is Momentum?Momentum is the vector quantity that represents a mass with a velocity at specific moment in time.
Or
Momentum is mass in motion.
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How do we represent momentum?
We represent momentum with the equation...
p = m x v
Where,
p = momentum (kg x m/s)
m = mass (kg)
and v = velocity (m/s)
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What are some real world examples of
momentum?
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.The Known or what values are given to us.
Thursday, April 14, 2011
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Thursday, April 14, 2011
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.
Thursday, April 14, 2011
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.Third Plug in the known values and solve for the unknown.
Thursday, April 14, 2011
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Example problemWhat is the momentum of a 747 jet (400,000 kg)that is traveling south from Dallas to Houston at a
velocity of 900 km/h (250 m/s)?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.Third Plug in the known values and solve for the unknown.
Last does your answer make sense?
Thursday, April 14, 2011
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AnswerThe 747 jet has a momentum of
100,000,000 kg x m/s in the southern direction.
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What is conservation of momentum?
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What is conservation of momentum?
The conservation of momentum is the fundamental law that objects acting in a closed
system will maintain momentum through collisions with other objects in the system.
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What is conservation of momentum?
The conservation of momentum is the fundamental law that objects acting in a closed
system will maintain momentum through collisions with other objects in the system.
Or
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What is conservation of momentum?
The conservation of momentum is the fundamental law that objects acting in a closed
system will maintain momentum through collisions with other objects in the system.
Or
When two objects collide the starting momentum of the objects will be the same as
the finishing momentum of the objects.
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How do we represent conservation of momentum?
We represent conservation of momentum of two objects with the equation...
p1i + p2i = p1f + p2f
Where, p1i = the initial momentum of object 1p2i = the initial momentum of object 2p1f = the final momentum of object 1p2f = the final momentum of object 2The Equation can also be written as...
(m1 x v1i) +(m2 x v2i) = (m1 x v1f) + (m2 x v2f)Thursday, April 14, 2011
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What is the difference between elastic and inelastic collisions?
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What is the difference between elastic and inelastic collisions?
An elastic collision is when objects collide and bounce apart.
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What is the difference between elastic and inelastic collisions?
An elastic collision is when objects collide and bounce apart.
Such as when a tennis ball hits a racket.
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What is the difference between elastic and inelastic collisions?
An elastic collision is when objects collide and bounce apart.
Such as when a tennis ball hits a racket.
An inelastic collision is when objects collide they stick together.
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What is the difference between elastic and inelastic collisions?
An elastic collision is when objects collide and bounce apart.
Such as when a tennis ball hits a racket.
An inelastic collision is when objects collide they stick together.
Such as when someone jumps into a boat sitting still.
Thursday, April 14, 2011
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What are some real world examples of conservation of
momentum?
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.The Known or what values are given to us.
Thursday, April 14, 2011
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Thursday, April 14, 2011
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.
Thursday, April 14, 2011
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.Third Plug in the known values and solve for the unknown.
Thursday, April 14, 2011
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Example ProblemAnn (65 kg) is roller skating west at 12 m/s, and hits Joe (49 kg) who is also on skates but who was standing still. Ann comes to complete stop after she hits Joe. What is Joe’s velocity after the collision?
First Define the variables and draw a diagram.The Known or what values are given to us.The Unknown or what are we solving for.
Second Define the equation we need to use.Third Plug in the known values and solve for the unknown.
Last does your answer make sense?
Thursday, April 14, 2011
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AnswerJoe will be rolling at 15.9 m/s west.
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Same Question
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Same QuestionExcept now Ann grabs on too Joe and they start rolling together. What is the resulting velocity
of the two roller skaters?
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Same QuestionExcept now Ann grabs on too Joe and they start rolling together. What is the resulting velocity
of the two roller skaters?
Answer
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Same QuestionExcept now Ann grabs on too Joe and they start rolling together. What is the resulting velocity
of the two roller skaters?
AnswerAnn and Joe are rolling at 6.8 m/s to the west.
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Review
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ReviewMomentum is mass in motion
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ReviewMomentum is mass in motion
p = m x v
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ReviewMomentum is mass in motion
p = m x vConservation of momentum means the starting momentum equals the
ending momentum.
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ReviewMomentum is mass in motion
p = m x vConservation of momentum means the starting momentum equals the
ending momentum. p1i + p2i = p1f + p2f
(m1 x v1i) +(m2 x v2i) = (m1 x v1f) + (m2 x v2f)
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Review
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ReviewAn elastic collision is when objects move
separately even after a collision
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ReviewAn elastic collision is when objects move
separately even after a collision
An inelastic collision is when objects move together as one mass after a collision.
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Furthering Your Understanding
You Tube Videos:
http://www.youtube.com/watch?v=eQ3RfKPPO2o
http://www.youtube.com/watch?v=UcFz1L4BFcA&feature=related
http://www.youtube.com/watch?v=mR8kDvCmHQA&feature=
Thursday, April 14, 2011