2. Distance-Time Graphs

Success Criteria

Your learning has been successful if you can do the following:

Interpret how an object is moving from the shape of its distance-time graph.
Draw distance-time graphs from the description of motion of an object.
Draw distance-time graphs from data obtained in motion experiments.

Vocabulary

Learn these so you can communicate this concept well.

Constant speed: When an object travels at the same speed without speeding up or slowing down.
Distance-time graph: This shows how the distance travelled by an onject changes over time.
Horizontal axis: The line on a graph that runs from left to right.
Stationary: When an object is not moving at all.
Vertical axis: The line on a graph that runs from bottom to top.

Lesson 2: Hei Mahi (Do Now)

Do Now on page 10 of your PESS1.2 SciPAD:

Answer Questions 1a, 1b, 2a, 2b, 3a and 3b.
Answer the rest if you finish quickly.

Lesson 2: Exit Task

Find some space on page 13 of your PESS1.2 SciPAD,
and answer the following questions:

What is the difference between constant speed and average speed?

Distance-Time Graphs

The distance an object has moved at different times, can be plotted on a DISTANCE-TIME GRAPH. In a distance-time graph, the VERTICAL AXIS is used for distance, while the HORIZONTAL AXIS is used for time.

For example, if a car travels at a CONSTANT SPEED of 50 km/h for seven hours and you record the distance and time on a chart, you will get data like this: