Distance-Time Graph Analysis

This video tutorial from ScienceWorks covers the basics of distance-time graphs, explaining how they represent the journey of an object over time. It describes the characteristics of these graphs, such as stationary, constant speed, and changing speed. The tutorial also demonstrates how to calculate speed using the gradient of a distance-time graph and discusses acceleration and deceleration. The video concludes with a comparison of different gradients representing different speeds.

What does a distance-time graph primarily show?

• The direction of an object's movement

• The acceleration of an object

• The journey of an object over time

• The speed of an object at a given time

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

• The object is decelerating

• The object is moving at a constant speed

• The object is accelerating

• The object is stationary

If a line on a distance-time graph is diagonal and straight, what does it signify?

• The object is moving at a constant speed

• The object is accelerating

• The object is decelerating

• The object is stationary

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

• By measuring the area under the graph

• By finding the gradient of the graph

• By counting the number of peaks

• By measuring the length of the line

In the example given, what is the calculated speed when the distance changes from 30m to 10m over 2 seconds?

• 20 m/s

• 15 m/s

• 10 m/s

• 5 m/s

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

• Constant speed

• No movement

• A faster speed

• A slower speed

If a man is walking and another is running on a distance-time graph, how do their gradients compare?

• The walking man has a steeper gradient

• The running man has a steeper gradient

• Both have the same gradient

• The gradients cannot be compared

What does a decreasing gradient on a distance-time graph signify?

• The object is stationary

• The object is decelerating

• The object is accelerating

• The object is moving at a constant speed

What does an increasing gradient on a distance-time graph indicate?

• The object is stationary

• The object is decelerating

• The object is accelerating

• The object is moving at a constant speed

What is the term used for negative acceleration on a distance-time graph?

• Constant speed

• Acceleration

• Deceleration

• Stationary