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Motion
MotionVocabulary Development…• Speed• Velocity• Acceleration
MotionSpeed
Level 1 – How fast something is goingLevel 2/3 – The distance traveled in a given time
ex: 40 miles in 1 hour Units =130 centimeters in 1 second Units =
Try this…Car 1 drove 90km in 2 hours.Car 2 drove 100km in 2 hours.Which car has more speed? How do you
know?
MotionSpeed – Critical Thinking about UNITS
Compare the following speed measurements:
5 m/s 1 mi/s
40 mi/h 40 cm/h
100 km/day 10 km/min
MotionSpeed – Critical Thinking about UNITS
Compare the following speed measurements:
5 mi/s 0.5 m/s
40 m/day 40 m/h
1000 cm/s 1000 cm/min
Motion
DS T
Cover the one you’re looking for.
MotionApplication: Speed Calculations
A pitcher threw a baseball 150 m in 2 seconds. How fast was the ball going?
A girl can run 5 m/s. How long will it take her to run 1000 m?
You drove 80 km/h for 3 hours. How far did you go?
Mini quiz!Application: Speed Calculations1. A car drove 120 miles in 3 hours. How fast was it
going?2. A sprinter can run 60 m/s. How long will it take
her to run 600m?3. You drove 50 mi/h for 8 hours. How far did you
go?
MotionVelocity
Speed and directionex: 50km/h south
What 3 ways can velocity change?
MotionAcceleration
Level 1 - Speeding upLevel 2 - A change in motionLevel 3 - The rate at which velocity changes
MotionSpeed – the distance traveled in a given time
Velocity – speed and direction
Acceleration – the rate at which velocity changes
Motion_______ – speed and direction
______ – the distance traveled in a given time
__________ – the rate at which velocity changes
Motion__________ – the rate at which _______ changes
______ – the _______ traveled in a given _____
_______ – _____ and direction
MotionVelocity – _____ and ________
Acceleration – the ____ at which _______ ______
Speed – the _______ ________ in a _____ _____
MotionApplication: Vocabulary1. Acceleration is a change in…
Speed velocity direction2. You jog around the block at a constant speed of
5mi/h. What changes?Speed velocity
acceleration
MotionQUICK REVIEW
What information must you know in order to calculate speed?
What is the error in the following statement:The velocity of the car is 55km/hr.
MotionApplication: Speed CalculationsYou will drive to a town that is 100km away. Half the trip you will be able to drive 100km/h (on the highway) and half the trip you will drive 50km/h (going through small towns). How long will it take you to get there? Show your work!
MotionApplication: Speed CalculationsA geologist used satellite data to determine that the North American plate had moved 10cm southwest in the last 5 years.1. What is the velocity of the North American
plate?2. How far will it move in the next 10 years?3. How long will it take the plate to move 100cm?
MotionCalculate the resultant velocity
for each of the passengers.
Airplane: 800km/h west
4km/h west5km/h east
0km/h west
MotionApplication: Speed CalculationsA plane flies 100 km east for 10 minutes, then 200 km for 10 minutes, and then 50 km for 5 minutes. What is the plane's average velocity?Did the plane accelerate?
MotionDistance-Time Graphs
Calculate the average speed at each point:A. _________B. _________C. _________D. _________
Did the car accelerate or stay at a constant speed? How do you know?
A
D
CB
MotionDistance-Time GraphsThe following graph shows the distance Kyle traveled on his bicycle trip and the amount of time it took him to travel that distance.
1. During which 5-minute interval did Kyle achieve the greatest average speed?
2. What may have happened between t = 10 and t = 15 minutes?
MotionEverybody Writes!In your own words, describe the motion shown by each graph. (Hint: Be sure to look at the labels on the x and y axis.)
Graph 1
MotionEverybody Writes!In your own words, describe the motion shown by each graph. (Hint: Be sure to look at the labels on the x and y axis.)
Graph 2
MotionEverybody Writes!In your own words, describe the motion shown by each graph. (Hint: Be sure to look at the labels on the x and y axis.)
Graph 3
MotionEverybody Writes!In your own words, describe the motion shown by each graph. (Hint: Be sure to look at the labels on the x and y axis.)
Graph 4
MotionApplication: Speed CalculationsHow fast would you have to drive to go from Atlanta to New York (900 miles) in 10 hours?
A red car drove 150km at a speed of 50km/h. A blue car drove 300km at a speed of 75km/h. Which car reached its destination first?
MotionDistance-Time Graphs
7006005004003002001000 1 2 3 4 5 6 7
Dist
ance
(km
)
Time (h)
Graph showing the speed of a car
---- Car 1
---- Car 21. Which car drove at a
constant speed?
2. Which car accelerated?
3. Which car is faster? How do you know?
4. Which car drove farther after 1 hour? After 6 hours?
Motion Quiz1. What two things must you know to calculate speed?2. What is wrong with the following statement:
The velocity of a car is 100km/h3. Turning left, slowing down, and speeding up are all examples of
__________. 4. How fast would you have to drive to go from Atlanta to New
York (900 miles) in 9 hours?5. A red car drove 400km at a speed of 50km/h. A blue car drove
600km at a speed of 75km/h. Which car reached its destination first? YOU MUST SHOW YOUR WORK FOR CREDIT!
Motion Quiz700
600
500
400
300
200
100
0 1 2 3 4 5 6 7
Dist
ance
(km
)
Time (h)
Graph showing the speed of cars---- Blue Car
---- Red Car
6. Which car drove the farthest after 1 hour?7. How far did each car drive in 7 hours?• Red Car _____• Blue Car: ____
8. Which car
accelerated?9. Which car stayed at a
constant speed?10. What best explains the
motion of the red car between t=1 and t=4?
MotionGraphing Practice:
MotionGraphing Practice: