Analyzing Distance Time Graphs and Interpreting Motion

The video tutorial explains distance-time graphs, highlighting how time is plotted on the horizontal axis and distance on the vertical axis. It covers key features such as steady speed, stationary periods, and changes in speed. The tutorial includes examples of journeys, demonstrating how to interpret graphs and calculate speed using the gradient. It also explains how to handle negative values when calculating velocity. Two example problems are provided: one involving a man's journey to a friend's house and another involving Sean's trip to the shops.

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

• The object is decelerating.

• The object is stationary.

• The object is moving at a steady speed.

• The object is accelerating.

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

• The object is moving at a constant speed.

• The object is accelerating.

• The object is moving backward.

• The object is stationary.

How is speed calculated from a distance-time graph?

• By measuring the length of the line.

• By adding distance and time.

• By multiplying distance and time.

• By dividing distance by time.

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

• 12:00 PM

• 1:30 PM

• 12:30 PM

• 1:00 PM

How far was the man from home at 3 PM?

• 35 kilometers

• 30 kilometers

• 40 kilometers

• 25 kilometers

How long did the man stay at his friend's house?

• 3 hours

• 30 minutes

• 1 hour

• 2 hours

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

• 20 km/h

• 50 km/h

• 30 km/h

• 40 km/h

How long did Sean spend at the shops?

• 25 minutes

• 10 minutes

• 15 minutes

• 20 minutes

At what speed did Sean travel back home?

• 40 km/h

• 50 km/h

• 60 km/h

• 70 km/h

How long did it take Sean to return home from the shops?

• 20 minutes

• 15 minutes

• 30 minutes

• 25 minutes