Video Interactivo 1 Ping-pong Bazooka PDF

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Summary

11111...

Description

Universidad nacional de Honduras en el Valle de Sula

Clase: Física

100

Sección: 0900

Grupo:

1

Integrantes: Fernando José Castro López Cesar Isaac Cedillos Barahona Emerson Darío Galindo Archila Nelson José Medina Molina Kevin Gabriel Ramos Ulloa

Maestro: Ing. Hernán Enrique Murillo

Fecha: 05 de julio de 2021

Rodríguez

4/7/2021

Student Response | Pivot Interactives

Go Back To Classes (/classes)

Copy of Intro to Moon Graphs: Ping-Pong Ball Bazooka (Scaffolded)

Fernando Castro Score: _______ / 20 Because you have submied this assignment for grading, you may not make any further changes to the assignment unless your instructor requests it.

Learning Objecves We'll begin by exploring the moon of this ping pong ball captured with a high-speed camera. Our goals are: • to describe the moon using a graph • to describe the moon mathemacally

 Geng Started

This video shows a ping pong ball launched from a vacuum cannon (hp://sciencedemonstraons.fas.harvard.edu/presentaons/vacuum-cannon) recorded using a high-speed camera. You can use the ruler and stopwatch tools to make measurements of this moon.

Video instance not printed. ?

(/player_help) 1. Let's try making some measurements from this video to help familiarize you with the tools. Start by using the video player controls to advance the video unl the first frame where the ball is visible:

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To control the video, you can use screen controls, or keyboard controls. Screen controls: • click the play/pause buon to start or stop the video • click frame advance or frame back buon to move one frame at a me • click and drag the scrub bar to move the video forward or back. Keyboard commands: • click spacebar to start and stop the video • use the right and le arrow keys to move forward or back one frame at a me.

Click the tool icon

to open the tool menu, then click the ruler icon

to bring up a ruler.

Use the ruler tool to measure the distance from the right edge of the ball to the le edge of the pop can. Which answer is closest? about 55 cm about 52 cm about 54 cm about 44 cm  2 / 4 submissions remaining Score:

Comments:

1/1 Great work!

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2. Next, let's use the stopwatch to measure me. Click the stopwatch icon

to bring up the stopwatch

tool. Advance the video to the frame you would like to use for t = 0, and click reset

to set the

stopwatch to zero. Now use the stopwatch to measure how long it takes for the ball to move from the muzzle of the pingpong ball bazooka to the pop can. about 0.01923 seconds about 0.00308 seconds about 0.00269 seconds about 50 seconds  2 / 4 submissions remaining Score:

Comments:

1/1 Great work!

 Graphing Direcons

This secon walks you through how to use the data table and graph. There is nothing you need to complete in this secon, but you should reference it as you work through the next secon.

1. The first step is to add tles to your data table. Click on the grey boxes to add informaon.

We are going to make a graph of posion vs. me graph, so you will need one column for me and one column for posion. Your data table should look something like this:

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We will need to convert the posion from cm to m and can use a calculated column to do this automacally. Click the three dots in your second column and choose "Insert Column Right" to get a third column.

Give your new column a tle. (HINT: Use the tle to remind yourself which column is in meters!) Click the three dots on your new column and pick "Change Column Formula". A screen that looks like a calculator will come up. This is where you will enter your formula. Pick Posion from the list on the right, then you will need to divide by 100 since 1 m = 100 cm. Your column for posion in meters will turn grey and should automacally fill as you enter values into the column for posion in cenmeters.

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Since there is a new copy of the video above the data table, make sure you've set up the ruler and stopwatch similar to what you did in the "Geng Started" secon. Gradually advance the video, recording the posion and me in your data table for at least 15 different mes. You should get a wide range of posions and mes, starng from when the pingpong ball is first visible unl it leaves the frame. Set the graph to plot posion on the vercal axis and me on the horizontal axis. Click on "Configure Vercal Axis", then select posion in m. Repeat for the horizontal axis.

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Student Response | Pivot Interactives

Turn on a line of best fit. Click the gear icon

, then choose "Curve Fits". In the menu that appears, pick

"Linear Fit".

You should now have a graph with a line of best fit! You are ready to move on to the next secon!

 Collect Data & Make a Graph In this secon, you will record data from the video and make a graph.

Video instance not printed. ?

(/player_help) 1. Follow the instrucons below. Use this data table and graph to collect and analyze measurements.

Tiempo

Posicion

 seg

t

m

1

0

0

2

0.00038

.08

3

0.00077

.155

4

0.00115

.235

5

0.00154

.31

6

0.00192

.39

7

0.00231

.47

x

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Tiempo

Posicion

 seg 8

t

0.00269

m

x

.545



Posicion vs Tiempo

0.5

P i i

( )

0.4

0.3

0.2

0.1

0 0

0.0005

0.001

0.0015

0.002

0.0025

Tiempo (seg) Display Curve Fit Uncertaines

Posicion Curve:

x = At + B m A : 203 seg B : 0.000758 m RMSE : 0.00182 m r : 1.00

Score: https://app.pivotinteractives.com/assignments/60c17c8aef3283001e5bbaf8/responses

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0/5

 Interpreng Your Graph

In this secon, you will use your graph to figure out key concepts

1. Take a look at the box below your graph. Check if the equaon for your line of best fit includes x and y.

If it does, go back to your data table and make sure each column has a variable to represent the quanty.

2. Describe the shape of your graph. Does the line of best fit go through all of the points?

Es lineal y si pasa atreves de todos los puntos de la grafica.

Score: 0/1

3. We are now going to focus on the moon of the pingpong ball before it collided with the can. First, review the video and find the me when the pingpong ball hit the can. Next, find that me on your graph. Click on each point that shows a me aer the pingpong ball collided with the can. Those points should now look like an "x":

The points you clicked are now ignored for the line of best fit.

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4. Describe the shape of the line of best fit. Does it go through all of the points?

sigue siendo lineal. Score: 0/1

5. A represents the slope of your line of best fit. Pay aenon to the number and the unit.

Take a look at the box below your graph to find your slope. What is the slope of your line? Hint: If you have an "e" in your number, similar to the screenshot, check the formula you used to get posion in

meters.

203 m/s

Score: 0/1

6. Turn your slope into a "for every" statement. Hint: "The goes up for every 1 of

."

La posición sube 203m por cada 1 segundo de empo. Score: 0/1

7. B represents the intercept of your line of best fit. Pay aenon to the number and the unit.

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Take a look at the box below your graph to find your intercept. What is the intercept of your line?

0.000758 m

Score: 0/1

8. Turn your intercept into a statement. Hint: "The is when the is zero."

La posición es de 0.000758 metros cuando el empo es 0 Score: 0/1

9. Does your intercept make sense? How do you know? Hint: It may help to rewind the video to the point where your me was 0.

Si. Porque la peloto esta en la posición 0 cuando el empo es igual a cero. Score: 0/1

10. Write out the equaon for your line of best fit. Hint: Make sure you have:

• Variables that match your experiment • Values for the the slope and intercept • Units for the slope and intercept

x=(203m/s)t+0.000758m https://app.pivotinteractives.com/assignments/60c17c8aef3283001e5bbaf8/responses

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Score: 0/3

11. An object's change in posion for every 1 sec of me is defined as its velocity. The velocity will also be the slope of the object's posion vs. me graph. How does the pingpong ball's velocity before it collided with the can compare to its velocity aer it collided with the can? Give your answer as a CER. Hint: Claim: Answer to the queson Evidence: Features of the graph or measurements that support your claim

Reasoning: Explain how the evidence supports your claim It may be helpful to change which points are selected on your graph, just like you did earlier to ignore points aer the pingpong ball collided with the can. You can click on points that are an

again to select

them.

La velocidad de la pelota antas de impactar la lata es mayor a su velocidad después de impactar. La pendiente en la grafica se manene lineal, después del impacto esta cambia y es menos inclinada mostrando el cambio en su velocidad.

Score: 0/3

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