+ day 1 – calculating speed mr. lambert integrated science 1a trimester 2, 2014
TRANSCRIPT
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Day 1 – Calculating Speed
Mr. LambertIntegrated Science 1ATrimester 2, 2014
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+Bell Ringer
In your own words, explain the meaning of 100 mi/h and 45 m/s
Does running twice as far take twice as much time?
Make a pile in your group with your finished Scientific Method Scenarios Homework
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+Agenda
1. Bell Ringer
2. Learning Targets
3. Average speed
4. Lab activity
5. Practice problems
6. Exit Slip
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+Learning Targets
On your Bell Ringer Sheet, write the following:
We will use measurements of distance and time to calculate average speed.
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+What is speed?
What does 60 mph mean?
If I travel 50 miles in 1 hour, what is my speed?
What about 100 miles in 2 hours?
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+What is the relationship between distance, time, and speed?Average Speed =
OR
Distance = Average Speed x Time
OR
Time =
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+Video
https://www.youtube.com/watch?v=_nAKwhZyXnw
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+Units
Meters per second (m/s)
Miles per hour (mi/h or mph)
Kilometers per hour (km/h)
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+Lab activity
Copy the following table
Ramp height (cm)
Distance (m)
Time (s) Speed (m/s)
5 1
10 1
15 1
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+Lab activity Model
Measure out 1m after end of ramp
1m
1m
1m
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+Lab Activity Wrap-up
Compare the ramp height and speed. What pattern do you observe?
What is the independent & dependent variable?
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+Whiteboards
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+Calculating average speed
NASCAR fans love race day when they get a chance to cheer on their favorite team! If a driver was able to travel 600 miles in 3 hours, what was his average speed?
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The fastest car on Earth, a British-made Thrust SSC, would win every NASCAR race in America. If it takes 0.5 hours (30 minutes) to travel 380 miles, what is its speed?
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+Calculating average speed
The fastest train on Earth, the TGV from France, can travel at faster speeds than trains in the United States. During a speed test, the train traveled 800 miles in 2.5 hours. What is its speed?
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Spirit of Australia, a hydroplane boat, made speed records by traveling 239 miles in 0.75 hours (45 minutes). What is its record-breaking speed?
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+Calculating distance & time
Calculate the distance that you would travel if you drove for:a) 3 hours at 20 mphb) 8 hours at 60 mphc) 2 hours at 80 mphd) 3 hours at 90 mph
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How long does it take to travel:a) 120 miles at 40 mph b)300 miles at 50 mphc) 240 miles at 60 mph d)280 miles at 70 mph
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+Learning Targets
How did we do?
I can use measurements of distance and time to calculate average speed.
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+Exit Slip
A car travels 300 miles in 5 hours. Calculate the average speed of the car.
How long does it take for the car to travel 82 miles?