Understanding Distance-Time Graphs and Calculating Speed

The video tutorial explains how to interpret distance-time graphs to understand the motion of objects, specifically focusing on a cyclist's journey. It covers how to calculate speed by finding the gradient of the graph and discusses stationary and moving phases. The tutorial also introduces the concept of accelerated motion and how to determine speed using tangents on a curve.

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

• Distance in meters

• Time in seconds

• Speed in meters per second

• Acceleration in meters per second squared

How is speed calculated from a distance-time graph?

• By measuring the area under the graph

• By counting the number of peaks

• By measuring the length of the graph

• By finding the gradient of the graph

What is the speed of the cyclist between 0 and 5 seconds?

• 8 meters per second

• 6 meters per second

• 4 meters per second

• 2 meters per second

What does a flat section on a distance-time graph indicate?

• The object is decelerating

• The object is accelerating

• The object is moving at a constant speed

• The object is stationary

What is the speed of the cyclist between 9 and 12 seconds?

• 0 meters per second

• 3 meters per second

• 1.33 meters per second

• 2 meters per second

How is speed calculated for an accelerating object on a distance-time graph?

• By finding the area under the curve

• By drawing a tangent to the curve

• By measuring the height of the curve

• By counting the number of curves

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

• The object is accelerating

• The object is moving at a constant speed

• The object is stationary

• The object is decelerating