jeopardy review mfe ch 1
TRANSCRIPT
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Moving Right Along
I Was Framed Momentous Occasion
Gimme a Problem
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4
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Momentous Occasion 2
• A bowling ball with a mass of 10 kg hits a stationary bowling ball with a mass of 5 kg and gives up all of its momentum to the 5 kg bowling ball.
• The 10 kg ball was going 2 m/s. • What will the speed of the 5 kg ball be?
Back
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Momentous Occasion 2
• It will have twice the speed because momentum is conserved.
• Back
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Momentous Occasion 3
• Does anything on earth have zero momentum if you use the sun as a frame of reference?
• Back
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Momentous Occasion 3
• no
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Gimme a Problem 1
• If a runner sustains a 10 m/s sprint for 150 m, how much time will the sprinter have run for?
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Gimme a Problem 1
• 15 s
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Gimme a Problem 2
• A Yankees fan is being chased by a Red Sox fan in the streets of Boston. The Yankees fan is running at 30 km/hr. He is chased from 6:30 pm until 7:00 pm. How far did he get chased?
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Gimme a Problem 2
• 15 km
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Moving Right Along 1
• An airplane travels at a rate of 400 km/hr. Its destination is 1200 km away. What is the flight duration?
• If the plane has to fly into a wind that averages 100 km/hr, what is the new flight duration?
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Moving Right Along 1
• 3 hours• 4 hours
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Moving Right Along 2
• How are speed and velocity different?
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Moving Right Along 2
• Speed is just distance/time• Velocity is the same with direction
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Moving Right Along 3
• On a distance-time graph, if the graph line curves, then you know the object being graphed has _________________?
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Moving Right Along 3
• accelerated
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Momentous Occasion 1
What is the momentum equation?
What does momentum measure?
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Momentous Occasion 1
• Mass times velocity• How hard it is to stop a moving object
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Moving Right Along 4
• If the earth orbits around the sun at the same speed all the time, is it accelerating? Why/ why not?
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Moving Right Along 4
• Because it is changing direction
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I was Framed 1
• If you are chasing a friend on your bike and going at the same speed and you use your bike as a frame of reference, is your friend moving?
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I was Framed 1
• no
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I Was Framed 2
• If you put a slinky on an escalator that is going up and the slinky stays there doing what slinkys are supposed to do (slink)….
• …then: What is its speed, in m/s? • Ps: The escalator stairs move at .8 m/s…
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I Was Framed 2
• Using the earth as a frame of reference, its speed is 0 m/s
• Using the escalator as a frame of reference, its speed is .8 m/s
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I Was Framed 3
• If you are on a moving sidewalk that is going 1.5 m/s and you walk with it at the same speed and in the same direction as it moves, what is your speed?
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I Was Framed 3
• 3 m/s using the earth as a frame of reference
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I Was Framed 4
• A deep sea diver can lose track of which way is up.
• What can she use as a frame of reference if everything around her is nothing but darkness?
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I Was Framed
• Bubbles
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Gimme a Problem 3
On this graph, which object has the greatest acceleration?
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Gimme a Problem 3
• B
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Gimme a Problem 4
On this Graph, describe, in words the motion of objects B and D.
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Gimme a Problem 4