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# CVM Test Review - PowerPoint PPT Presentation

CVM Test Review. Please grab a small white board and take out your notes. Individual. Position (m). Fill in the blanks: The graph has a __________ fit which means that the object is traveling at a _________ rate.

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## PowerPoint Slideshow about ' CVM Test Review' - irma-cooley

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Presentation Transcript

• Please grab a small white board and take out your notes

Position (m)

• Fill in the blanks:

• The graph has a __________ fit which means that the object is traveling at a _________ rate.

• Word Bank: constant, decreasing, positive, linear, increasing, non-linear, direct

Time (s)

Position (m)

• Given the graph above:

• 1.What is the independent variable?

• 2.What is the dependent variable?

• 3.What does the slope represent?

• 4.What does the y-intercept represent?

Time (s)

Position (m)

• 5. What direction is the object traveling? How do you know?

• 6. What is it’s velocity? +/-/0, how do you know?

Time (s)

B

A

Position (m)

• Which object has a greater speed? How do you know?

• What happens at 4 seconds?

4

Time (s)

B

Position (m)

A

• Which object has a greater speed? How do you know?

• Do the objects ever pass each other? How do you know?

4

Time (s)

3

2

1

Velocity (m/s)

0

-1

-2

• Calculate the displacement from:

• 0-3

• 3-6

• 6-8

• 8-10

-3

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

• Ashrita Furman holds several world records. In 2004 he set the world record for the fastest 100m on a space hopper. He traveled at 3.31 m/s on the space hopper. How long did it take him?

• In 2010, he set the record for the fastest mile on a space hopper. It took him 13 minutes flat. What was his average velocity in m/s?

• 1 mile = 1609 m

• 1 minute = 60 seconds

• Ashrita also holds a world record for potato sack racing. In 2007, he raced at an average velocity of 1.607 m/s for 1001 seconds. What distance did he travel?

Fun fact: Ashrita holds the World Record for the most world records held by one person (currently 202)

CheckDo we need more practice with solving constant velocity problems?

• The current fastest airplane is the Lockheed SR-71 Blackbird. It set the record in 1976, with a velocity of 980.4 m/s. If the circumference of the Earth is about 40,000,000m, how long would it take the Blackbird to go around the world in hours?

• To get her world record, Joanne Singleton ran at an average rate of 3.67 m/s for 5745 s (1 hour, 35 min, 45s) dressed as a strawberry. How far did she run?

• Tom Wiberg built and rode the world’s smallest motorcycle. He traveled 10 m in 18 seconds. What was his average velocity?

6

5

4

Position (m)

3

2

1

• Given the following graph:

• 1.Sketch a velocity vs. time graph

• 2.Sketch a motion map

0

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

6

5

4

Position (m)

3

2

1

• Given the following graph:

• 1.Sketch a velocity vs. time graph

• 2.Sketch a motion map

0

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

6

5

4

Position (m)

3

2

1

• Given the following graph:

• 1.Determine the average velocity

• 2.Write the mathematical model that describes the object’s motion

0

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

6

5

4

Position (m)

3

2

1

• Given the following graph:

• 1.Determine the average velocity

• 2.Write the mathematical model that describes the object’s motion

0

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

• Review the worksheets we did the last couple of days.

• Review this powerpoint

• The answers are posted after this slide

• Slide 2: linear, constant

• Slide 3: time, position, velocity, initial position

• Slide 4: negative direction because of negative slope, negative velocity because of negative slope

• Slide 5: B because it has a steeper slope, they have the same position at the same time (they meet, pass, collide, etc.)

• Slide 6: B because it has a steeper slope, No because they never have the same position at the same time (the lines do not intersect)

• Slide 7: 6m, 0m, -6m, 2m

• Slide 8: 30.21 sec

• Slide 9: 2.06 m/s

• Slide 10: 1608.607m (1 mile)

• Slide 12: 11.3 hours

• Slide 13: 21084.15 m (a half marathon)

• Slide 14: 0.556 m/s (1.24 mph)

3

2

1

Velocity (m/s)

0

-1

-2

-3

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

3

2

1

Velocity (m/s)

0

-1

-2

-3

0 1 2 3 4 5 6 7 8 9 10 11

Time (s)

• Slide 17: -4/6 m/s = -2/3 m/s = -0.667 m/s; x = -0.667 t + 5

• Slide 18: 5/10 m/s = ½ m/s = 0.5 m/s;

x = 0.5 t