Chap 1-3 Acceleration
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Science
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8th Grade
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Medium
Standards-aligned
Sonal Chandra
Used 83+ times
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12 Slides • 7 Questions
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Chap 1-3 Acceleration
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An object accelerates when its velocity changes as a result of:
Increasing Speed
Decreasing Speed
Change in direction (even if an object is traveling at constant speed)
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Multiple Choice
Are the horses in the carousel accelerating even though their speed is constant?
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Calculating Acceleration
Acceleration= (Final Speed- Initial Speed)/ Total TIme
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Multiple Select
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Multiple Choice
A bicyclist started from rest along a straight path. After 5s, his speed was 8m/s. What was his acceleration during the time?
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Object at Rest
The speed is zero and does
not change
Horizontal line (like a
distance – time graph y = 0
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Constant Speed
The line will be HORIZONTAL
The further the line is from the X-AXIS the FASTER it is moving.
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Speeding Up
The line on a speed – time graph is CLOSER to the x-axis in the BEGINNING of the time period when it has a LOWER speed
The line slants UPWARD toward the right side of the graph as the speed INCREASES
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Open Ended
What is happening to the speed in this graph?
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Slowing Down (Negative Acceleration)
When initially starting to slow down the point representing speed is FAR from the x-axis.
When the line touches the x-axis, the speed is ZERO and the object
stopped.
The line on a speed-time graph slopes downward to the right.
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Comparing Distance – Time and
Speed – Time Graphs
OBJECTS AT REST
Distance from reference point doesn't change
Speed is ZERO and doesn't change
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Multiple Choice
What are these Graphs showing?
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Constant Speed
Distance increases at a steady rate
Object's speed does not change, but it is not zero
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Multiple Choice
What are these graphs showing?
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Decreasing Speed
As the distance increases the rate of increase gets smaller over time
The speed of the object decreases at a steady rate over time
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Multiple Choice
What are these graphs showing?
Chap 1-3 Acceleration
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