PASCO SE-9076 Constant Velocity Tubes User Manual

Page 17

Constant Velocity Tubes

012–06697B

16. What arguments can you offer, based on this experiment, that the speed of the bubble is the

same as the slope of the position vs. time graph?

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In algebra, a graph of the type seen in this experiment is described by the equation:

y = mx + b

where: y is the quantity on the vertical axis,

x is the quantity on the horizontal axis,

m is the slope, and

b is the y-intercept (also called the vertical intercept).

17. Write equations for each of the three tubes you experimented with by substituting into the

basic equation above the appropriate values for slope and y-intercept, as well as the names

of the variables that x and y represent.

Color:_________ Equation: ________________________________________

18. By replacing each of these abstract symbols with the actual items dealt with in the experiment,

the mathematical equation can be transformed into a basic equation of motion. Write a

basic equation for motion using the words position, time, velocity, and initial position.

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