Chacon,Valerie M

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GROUP 1 Chacon,Valerie M Jurrens,Aaron
David Murphy,Molly Elizabeth Venning,
Ashley GROUP 2 McCullough,Molly
Brenna Ritten,Alison Marie Wappel,Amanda J GROUP
3 Decker,Katelyn Alissa Zacharias,Samantha
Shea Holgers,Angela C GROUP 4 Brick,Jennifer
Rosemary Dressen,Brianna Rose Holter,Emily
Rose Thorson,Kathryn JoAnne
GROUP 5 Roberts,Vanessa Anita Heim,Kelli
Marie Johnson,Ashlee Rene Loe,Emily Anne GROUP
6 Souknhindy,Shanna Marie Dorschner,Marissa
Anne Thoemke,Marie Lynn GROUP 7 Poeschl,Jessica
M Titrud,Melissa Jane Le,Hai Truong
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Page 5
Type(s) of interaction(s)
Is(are)
energy diagram(s)
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Plan for todays class
1. Summarizing Questions, page 2-13, at about
200 PM 2. Initial idea, page 2-15 3.
Demonstration 4. Summarizing Questions, page
2-22 5. Explanation, page 2-27
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S/Q, P2-13 S1 While the hand is exerting a
force on the cart, what is the motion of
the cart like? What evidence from this
activity supports your idea? (3) S2 Do you
think the force from the hand was
transferred from the hand to the cart during
this interaction between them, and then
continued to act on it after contact was
lost? What evidence supports your idea? (4)
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S3 At what moment do you think the force
of the hand stopped acting on the cart? (5) S4
During a contact interaction, what do you
think is transferred from the source to
the receiver energy, force, both, or neither?
Explain your reasoning. (6)
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Plan for todays class
1. Summarizing Questions, page 2-13, at about
200 PM 2. Initial idea, page 2-15 3.
Demonstration 4. Summarizing Questions, page
2-22 5. Explanation, page 2-27
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Initial idea P2-15
Imagine you had a low friction cart at rest at
one end of the track in front of you. Suppose
you were to interact with it by pushing the cart
continuously from behind with a
constant-strength push. What do you think the
motion of the cart would be like under these
circumstances? (7)
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Sketch a speed-time graph to illustrate you idea.
(1)
Briefly explain your reasoning. (2)
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Plan for todays class
1. Summarizing Questions, page 2-13, at about
200 PM 2. Initial idea, page 2-15 3.
Demonstration 4. Summarizing Questions, page 2-22
and through p2-24 5. Explanation, page 2-27
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S/Q, P2-22 S1 If a cart is at rest and a single
force acts on it, what happens? If the
same force continues to act on the cart
what happens to the carts speed? (3)
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S2 In general, during the time a single force
with a constant strength acts on a moving
object, in the same direction as its
motion, what is the objects motion like?
Does it move at a constant speed, does
its speed continuously increase, or does
the speed only increase at first and then
become constant after a short time? What
evidence from this activity supports your
answer? (4)
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S3 When you were using your finger to try to
push the cart with a constant strength,
you probably noticed the cart was getting
away from you. (If not, try it again).
Why do you think the cart behaved this way?
(5) S4 Suppose that, while the cart was being
pushed along the track by the fan unit, a
wire suddenly broke so that the fan unit
stopped pushing on the cart. What do you
think would happen to the speed of the cart?
Explain your reasoning. (6)
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S5 At the beginning of activity 1 of this
chapter you sketched a speed-time graph
for a soccer ball that was given a quick
kick and then slowed to a stop as it
rolled across the grass. Sketch this graph
again below, with any changes from the
original you wish to make.
(7)
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If you made any changes from the graph you drew
in activity 1, briefly describe them, and your
reasoning for making them. (any group) S6 On
the graph you drew on the previous question,
use different colored pencils to indicate a)
The section (or sections) of the graph during
which there was a contact interaction between
the foot and the ball. b) The section (or
sections) of the graph during which a force
acted on the ball in the same direction as its
motion. Explain your reasoning for choosing these
sections. (1)
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(No Transcript)
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Explanation Why did the cart with a fan-unit
attached continue to speed Up as it moved along
the track?
A. Describe the situation using a diagram
B. Write the narrative
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Please throw away the bad markers, clean your
white board, turn off the monitor.