Lab 1 - Motion

What is the formula for average velocity?

(x₂ - x₁) / (t₂ - t₁)

Can you look at a position graph and tell which direction the glider was moving? How? Explain.

- Positive slope = glider moving away from the detector - Negative slope = glider moving toward the detector

What is the Position (x) and what is it measured in?

- The location of an object with respect to a reference point at a given time. - The position is measured in meters [m].

What is the difference between the velocity plot of the glider moving towards the detector and the velocity plot of the glider moving away from the detector?

- When the velocity plot line is above the x-axis, it is moving away from the detector - When the plot line is below the x-axis it is moving towards the detector

What is Velocity and what is measured in?

- a quantity that completely describes how the position is changing at an instant in time - includes information about both the speed and direction of travel - measured in meters per second (m/s)

What is Average Velocity and what is it measured in?

- an aggregate quantity that describes how the position of an object was changing over a period of time. - measured in meters per second [m/s].

What is Distance (|x|) and what is it measured in?

- how far an object is to a reference point at a given time - units of distance are meters (m)

What will you learn in the Motion lab?

- how the velocity (speed and direction) is related to the position of that object

What is Speed and what is it measured in?

- the quantity that represents how fast an object is moving. - units of speed are meters per second [m/s].

For the velocity graphs, what is the difference in moving at a faster and steady pace versus moving in the same direction at a slower and steady pace?

The line of a faster and steady pace have velocity graphs that are further away from the x-axis than that of a slower and steady pace.

What is the reference point of the Motion lab?

The motion detector

Looking at the position graphs, what is the difference in moving at a faster and steady pace versus moving in the same direction at a slower and steady pace?

The position line of a faster and steady pace had a steeper and more prominent slope versus the line of a slower and steady pace

Motion

the movement of an object in a direction

What does it mean when v = 0

the object is not moving