Math Problem Statement
A distance-time function, d(t) , is in the image. Answer the following questions regarding this d(t) .
a) What is the average velocity of the entire journey?
b) What is the average velocity between 1-2 seconds into the journey?
c) Of the half-second (0, 0.5, 1, 1.5...) times into the journey, which has the most positive instantaneous velocity?
d) What is the average velocity between 0.5-1 seconds into the journey?
e) Why is the velocity in (d) negative? That is, what does this mean in real-life terms?
f) At what times into the journey is the instantaneous velocity zero?
g) What are the units of average velocity?
h) What are the units of instantaneous velocity?
Solution
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Math Problem Analysis
Mathematical Concepts
Distance-Time Graph
Average Velocity
Instantaneous Velocity
Slope
Units of Velocity
Formulas
Average velocity = (change in distance) / (change in time)
Instantaneous velocity = slope of distance-time curve
Theorems
The slope of a distance-time graph represents velocity
Suitable Grade Level
Grades 10-12
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