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Student Objective
Click below for today’s topic & warmup
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•Interpret speed graphs
WARM-UPWARM-UP
Student Objective
•What is the difference between speed and velocity?
Speed is how fast an object travels
Velocity is how fast an object travels in a certain direction.
Speed Graph
Time
Describe the motion of the car in graph #1 and graph #2.
#1 #2
Name: _________________
Class: __________________
An upward slope tells us an object is moving ___________
A downward slope tells us the object is moving ___________
A straight line tells us an object is moving at _________ ________
A not straight line tells us an object is _____________
The horizontal line in the middle here tells us the object __________
This object is moving away and ___________ _____.
This object is moving ____________ and ____________ _____
This object is moving closer and _________ ________
•The direction the line is heading determines whether an object is coming closer or moving away.
•The slope of the line tells you how fast the object is moving (steeper = faster).
•A curved line indicates acceleration or deceleration.
Name: _________________
Class: __________________
An upward slope tells us an object is moving ___________
A downward slope tells us the object is moving ___________
A straight line tells us an object is moving at _________ ________
A not straight line tells us an object is _____________
The horizontal line in the middle here tells us the object __________
This object is moving away and ___________ _____.
This object is moving ____________ and ____________ _____
This object is moving closer and _________ ________
•The direction the line is heading determines whether an object is coming closer or moving away.
•The slope of the line tells you how fast the object is moving (steeper = faster).
•A curved line indicates acceleration or deceleration.
steady speedchanging speed
speeding up
away
closer
speeding
not moving
up
closer
slowing
down
3. The price of a certain CD varied over a period of time. It started high and remained the same for a period of time. Then it had a steady decrease until it reached an all time low, where it stayed the same for a period of time. In the end, the stock rose fast to a moderate price, where it remained for the remaining time.
2. The post office charges $.41 for any mail up to an ounce in weight. After that the charge is $.23 for each additional ounce or part of an ounce. For instance, if it weights 1.1 ounces or 1.9 ounces, it will cost the same, $.64.
1. Jeffery left his home headed toward the school. He started out at a steady moderate pace until he got to a red light. While stopped at the light, he realized that he had forgotten his math homework. He turned around and headed back home at a faster pace. Then he drove to school at a fast pace without stopping on the way.
Circle the graph that best matches each scenario below.
3. The price of a certain CD varied over a period of time. It started high and remained the same for a period of time. Then it had a steady decrease until it reached an all time low, where it stayed the same for a period of time. In the end, the stock rose fast to a moderate price, where it remained for the remaining time.
2. The post office charges $.41 for any mail up to an ounce in weight. After that the charge is $.23 for each additional ounce or part of an ounce. For instance, if it weights 1.1 ounces or 1.9 ounces, it will cost the same, $.64.
1. Jeffery left his home headed toward the school. He started out at a steady moderate pace until he got to a red light. While stopped at the light, he realized that he had forgotten his math homework. He turned around and headed back home at a faster pace. Then he drove to school at a fast pace without stopping on the way.
Circle the graph that best matches each scenario below.
How would you describe the motion of
these cars?
Are they accelerating, decelerating, or
moving at a constant speed?
Which distance-time graph represents each car?
- Describing and Measuring MotionCalculating Speed• If you know the distance an object travels in a
certain amount of time, you can calculate the speed of the object. Speed = distance ÷ time
Calculate the speed of each animal after one minute (60 sec.) has elapsed.
Rabbit Speed = D/T
Speed = 1000m / 60sec Speed is _______
Tortoise Speed = D/T
Speed = ______m / 60sec Speed is _______
Cheetah Speed = D/T
Speed = ______m / ____sec Speed is _______
4
2000 60
16.67 m/s
0.07 m/s
33.33 m/s
Calculate each snowmobile’s speed and predict the winner.
Then race them to see if you were right!
http://sunshine.chpc.utah.edu/Labs/ForceAndMotion/act1/lab.htm
How Fast Can You Get Your Shuttle to How Fast Can You Get Your Shuttle to the Spaceship?the Spaceship?
• You will now complete a online graphing activity to see how fast you can race through space to the mother ship!! Can you make it in time? Spend 5 minutes trying to make the trip to the mother ship as fast as you can
• Read the directions carefully and away you go!
• Answer the questions on your worksheet.
Distance Time Graph Activity
13
Answer the following question on your notebook paper.(Distance in miles, time in hours)
1. How many miles away was the shuttle from the spaceship at the beginning of the trip?
2. How far away was your shuttle from the spaceship 10 hours into the trip?
3. How far away was your shuttle from the spaceship 20 hours into the trip?
4. How far away was your shuttle from the spaceship 25 hours into the trip?
5. Where in your trip were you traveling the fastest?
How do you know??
6. Where in the trip were you traveling the slowest?
How do you know??
How Fast Can You Get Your Shuttle to the Spaceship?How Fast Can You Get Your Shuttle to the Spaceship?
ExtensionExtension
• How did the various objects in space affect the speed of your shuttle?
• Do you think you were traveling at a constant speed in your shuttle? Why or why not?
Be prepared to share your responses with the class.
15
Conclusion: Which animal is the has the
fastest speed?
AnimalA. 10 miles in 2 hours
B. 50 miles in 25 hoursC. 15 miles in 5 hours
