Understanding Speed and Distance-Time Graphs

This video provides a comprehensive introduction to distance-time graphs, explaining how to plot journeys and analyze different sections of the graph. It covers calculating speed using the gradient of the line and drawing graphs for specific speeds. The video also includes solving typical questions and advanced analysis of distance-time graphs, including concepts of velocity and displacement.

What does the vertical axis represent in a distance-time graph?

• Time elapsed

• Distance from a fixed point

• Direction of travel

• Speed of travel

If a line on a distance-time graph is horizontal, what does it indicate?

• The object is moving at a constant speed

• The object is stationary

• The object is accelerating

• The object is moving backwards

How is speed calculated from a distance-time graph?

• By dividing distance by time

• By measuring the length of the line

• By counting the number of grid squares

• By adding the time intervals

What does a steeper line on a distance-time graph indicate?

• Slower speed

• Constant speed

• Faster speed

• Stationary object

If a journey is represented by a straight line on a distance-time graph, what can be inferred?

• The speed is changing

• The speed is constant

• The object is stationary

• The object is accelerating

What is the total distance traveled if a journey consists of 3 km, 1 km, and 4 km segments?

• 6 km

• 7 km

• 8 km

• 9 km

What is the speed if 3 km is covered in 2 hours?

• 1.5 km/h

• 3 km/h

• 6 km/h

• 2 km/h

What is the average speed if a total distance of 120 km is covered in 6 hours?

• 15 km/h

• 20 km/h

• 25 km/h

• 30 km/h

Which of the following is true about a line with a negative gradient on a distance-time graph?

• The object is accelerating

• The object is returning to the starting point

• The object is moving away from the starting point

• The object is stationary

How is velocity different from speed?

• Velocity includes direction, speed does not

• Velocity is only used for stationary objects

• Velocity is measured in km/h, speed in m/s

• Velocity is always greater than speed