The video tutorial explains distance-time graphs, highlighting their components and how to interpret them. It covers key features such as steady speed, stationary periods, and returning to the starting point. The tutorial also explains how to calculate speed using the gradient of the graph. Two example problems are provided: one involving a man's journey and another involving Sean's journey, demonstrating how to apply these concepts in real-world scenarios.

What does a straight diagonal line on a distance-time graph indicate?

• The object is decelerating.

• The object is accelerating.

• The object is moving at a steady speed.

• The object is stationary.

What does a horizontal line on a distance-time graph represent?

• The object is decelerating.

• The object is stationary.

• The object is accelerating.

• The object is moving at a steady speed.

Tags

NGSS.MS-PS3-1

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

• Time divided by distance.

• Time minus distance.

• Distance divided by time.

• Distance multiplied by time.

At what time did the man stop for lunch during his journey?

• 1:30 PM

• 1:00 PM

• 12:30 PM

• 12:00 PM

How far was the man from home at 3 PM?

• 25 kilometers

• 30 kilometers

• 35 kilometers

• 40 kilometers

What time did the man reach his friend's house?

• 3:00 PM

• 4:00 PM

• 5:00 PM

• 6:00 PM

What was Sean's speed for the first 30 minutes of her journey?

• 50 kilometers per hour

• 20 kilometers per hour

• 40 kilometers per hour

• 30 kilometers per hour

How long did Sean spend at the shops?

• 20 minutes

• 15 minutes

• 25 minutes

• 10 minutes

At what speed did Sean travel back home?

• 40 kilometers per hour

• 50 kilometers per hour

• 70 kilometers per hour

• 60 kilometers per hour

Tags

NGSS.MS-PS3-1

How long did it take Sean to travel back home?

• 10 minutes

• 15 minutes

• 20 minutes

• 25 minutes