Questions and Answers
Which equation is most likely used to determine the acceleration from a velocity vs. time graph?
m = (y2 - y1) / (x2 - x1)
A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration?
6 m/s²
If the change in velocity increases, what happens to the acceleration during the same time period?
Acceleration increases.
Isla's change in velocity is 30 m/s, and Hazel has the same change in velocity. Which best explains why they would have different accelerations?
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Based on the position vs. time graph, which velocity vs. time graph would correspond to the data?
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Which graph shows a negative acceleration?
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The chart shows the times and accelerations for three drivers. Which lists them from greatest to lowest change in velocity?
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Which equation can be used to solve for acceleration?
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Which refers to the rate of change in velocity?
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Which of these is an example of acceleration?
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Study Notes
Acceleration Basics
- The formula m = (y2 - y1) / (x2 - x1) is used to calculate acceleration from a velocity vs. time graph.
- Acceleration is defined as the rate of change of velocity over time.
Example of Acceleration Calculation
- A car's acceleration can be calculated when it increases its velocity from 35 m/s to 65 m/s in 5 seconds, resulting in an acceleration of 6 m/s².
Relationship Between Velocity Change and Acceleration
- An increase in the change of velocity during a constant time period leads to an increase in acceleration.
Individual Differences in Acceleration
- Two individuals can have the same change in velocity but differ in acceleration if they have different time intervals; for instance, Isla and Hazel both changed their velocity by 30 m/s, but Isla's time varied from Hazel's.
Graphical Analysis
- A position vs. time graph's corresponding velocity vs. time graph may go horizontal, indicating constant velocity.
- A specific graph labeled D represents negative acceleration.
Acceleration Comparison
- A chart listing drivers by their change in velocity may rank Kira highest, followed by Diego, then Dustin, indicating their respective performance differences.
Equations for Finding Acceleration
- The formula A = Δv/Δt can also be used to calculate acceleration, emphasizing its relationship with changes in velocity and time.
Definition and Examples of Acceleration
- Acceleration can be described as the change in velocity, and an example includes a bicyclist making a turn, demonstrating the concept in motion.
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Test your understanding of acceleration concepts and calculations with these flashcards. The quiz covers key equations and examples related to determining acceleration from velocity changes over time. Perfect for students preparing for physics exams!
