Distance Time Graphs and Constant Speed Calculations

The video tutorial explores the relationship between distance and time, emphasizing how time is the independent variable and distance is the dependent variable. It explains graph trends, such as upward, downward, and flat lines, and how they relate to movement. The tutorial discusses the significance of line steepness in determining speed and the meaning of curves in graphs. An example of Devon's bicycle ride is used to illustrate these concepts, highlighting how to calculate speed and analyze distance-time graphs. Key points are recapped, emphasizing the importance of understanding graph trends and speed calculations.

What is the independent variable in a distance-time relationship?

• Distance

• Time

• Speed

• Location

In a distance-time graph, what does a horizontal line indicate?

• Moving away

• Changing speed

• Coming closer

• Staying in the same spot

What does a downward trend in a distance-time graph signify?

• Staying still

• Coming closer

• Increasing speed

• Moving away

Which line represents a faster speed in a distance-time graph?

• A steeper line

• A horizontal line

• A curved line

• A less steep line

What does a curve in a distance-time graph indicate?

• Constant speed

• Variable speed

• Constant distance

• No movement

In Devon's bicycle ride, what was his speed from point A to B?

• 0 km/h

• 5 km/h

• 10 km/h

• 7.5 km/h

Tags

NGSS.MS-PS3-1

How long did Devon take a break between points C and D?

• 30 minutes

• 1 hour

• 15 minutes

• 2 hours

What was Devon's speed from point B to C?

• 10 km/h

• 5 km/h

• 0 km/h

• 7.5 km/h

Tags

NGSS.MS-PS3-1

From point D to E, what can be said about Devon's speed?

• Increasing speed

• No movement

• Variable speed

• Constant speed

How do you calculate speed from a distance-time graph?

• Subtract time from distance

• Divide distance by time

• Multiply distance by time

• Add distance and time