PS.5.2.2 — Measuring Motion and Using Graphs

Front

What is motion?

Back

A change in an object's position over time.

Front

How can you measure motion?

Back

By measuring how far something travels in a certain amount of time.

Front

What is speed?

Back

How fast an object is moving—distance divided by time.

Front

How can you compare the speeds of two objects?

Back

Measure how far each travels in the same amount of time or how long each takes to go the same distance.

Front

What does a distance/time graph show?

Back

It shows how far an object moves over a period of time.

Front

On a graph, what does a straight line going up mean?

Back

The object is moving at a steady speed.

Front

What does a flat (horizontal) line on a distance/time graph mean?

Back

The object is not moving—it has stopped.

Front

What does a steeper line on a graph tell us about speed?

Back

The steeper the line, the faster the object is moving.

Front

What do the X and Y axes represent on a distance/time graph?

Back

X-axis = time; Y-axis = distance.