
Describe Motion
Presentation
•
Science
•
8th Grade
•
Hard
Joseph Anderson
FREE Resource
13 Slides • 9 Questions
1
Describing Motion
Unit 4 Notes
2
Open Ended
How would you go about describing motion?
3
Motion is what
occurs when an object changes position relative to a reference point.
4
Two ways that we can describe motion are by
Distance
Displacement
5
Distance is
how far an object has traveled
6
Displacement is
distance and direction of an object's change in position from the starting point.
7
Practice Time
Let's see if you can determine distance vs. displacement
8
Multiple Choice
9
Multiple Choice
10
Multiple Choice
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Multiple Choice
Jerry walked from home to school, then from the school to the park. What is his total distance?
2 km
5 km
8 km
10 km
12
Multiple Choice
A man walks 5 miles forwards, 6 miles backwards and then 2 miles forwards. What is his displacement?
1 mile forward
13 miles
3 miles forward
1 mile
13
Multiple Choice
14
Multiple Choice
The sum of all movements from start to the end of motion is best described as____.
distance
displacement
motion
donkey
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Multiple Choice
The change in an objects position from the final position to initial position.
displacement
distance
motion
reference point
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Speed is
the distance an object travels per unit of time
Is also considered to be the rate of change in a position
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The formula for calculating speed is
Speed (S) = Distance (d) / Time (t)
This means: Speed (m/s) = distance (m) / time (seconds)
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To calculate Average Speed you would:
take the total distance divided by the total unit of time
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Comparing Types of Speed
We will now compare the three types of speed and give examples of each.
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Instantaneous Speed
Speed at any given point in time
Driving a car and looking down at the speedometer
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Average Speed is
Total distance traveled divided by the total time traveled
Example is taking a road trip
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Constant Speed is
Speed that does not vary
Example: Putting the car in cruise control
Describing Motion
Unit 4 Notes
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