cvm test review please grab a small white board and take out your notes
TRANSCRIPT
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CVM Test Review
Please grab a small white board and take out your notes
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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
Position (m)
Time (s)
Individual
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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?
Position (m)
Time (s)
Individual
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5. What direction is the object traveling? How do you know?
6. What is it’s velocity? +/-/0, how do you know?
Position (m)
Time (s)
Class
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Which object has a greater speed? How do you know?
What happens at 4 seconds?
Position (m)
Time (s)
A
B
4
Class
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Which object has a greater speed? How do you know?
Do the objects ever pass each other? How do you know?
Position (m)
Time (s)
A
B
4
Class
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Calculate the displacement from:0-33-66-88-10
Velocity (m/s)
Time (s)
Individual
0 1 2 3 4 5 6 7 8 9 10 11
32
10
-1-2-3
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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?
Individual
𝑥=𝑣𝑡+𝑥0
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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
Individual
𝑥=𝑣𝑡+𝑥0
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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?
Individual
𝑥=𝑣𝑡+𝑥0
Fun fact: Ashrita holds the World Record for the most world records held by one person (currently 202)
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Check
Do we need more practice with solving constant velocity
problems?
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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?
Individual
𝑥=𝑣𝑡+𝑥0
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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?
Individual
𝑥=𝑣𝑡+𝑥0
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Tom Wiberg built and rode the world’s smallest motorcycle. He traveled 10 m in 18 seconds. What was his average velocity?
Individual
𝑥=𝑣𝑡+𝑥0
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Given the following graph:1.Sketch a velocity vs. time graph2.Sketch a motion map
Position (m)
Time (s)
Individual
0 1 2 3 4 5 6 7 8 9 10 11
65
43210
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Given the following graph:1.Sketch a velocity vs. time graph2.Sketch a motion map
Position (m)
Time (s)
Individual
0 1 2 3 4 5 6 7 8 9 10 11
65
43210
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Given the following graph:1.Determine the average velocity2.Write the mathematical model that
describes the object’s motion
Position (m)
Time (s)
Individual
0 1 2 3 4 5 6 7 8 9 10 11
65
43210
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Given the following graph:1.Determine the average velocity2.Write the mathematical model that
describes the object’s motion
Position (m)
Time (s)
Individual
0 1 2 3 4 5 6 7 8 9 10 11
65
43210
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Homework: Prepare for Success!
Review the worksheets we did the last couple of days.
Review this powerpointThe answers are posted after this slide
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Answers
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.)
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Answers 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)
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Answers: Slide 15
3
Velocity (m/s)
Time (s)0 1 2 3 4 5 6 7 8 9 10 11
2
10
-1-2-3
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Answers: Slide 16
3
Velocity (m/s)
Time (s)0 1 2 3 4 5 6 7 8 9 10 11
2
10
-1-2-3
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Answers 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