GCSE Secondary Maths Age 13-17 - Graphs: Speed/Time Graph - Explained

The video tutorial explains how to interpret a speed-time graph for a car journey. It covers calculating velocity using the area under the graph, specifically a trapezium, and describes acceleration at different stages of the journey. The tutorial emphasizes the importance of unit conversion and understanding graph gradients to determine acceleration and deceleration. Key points include calculating velocity, understanding acceleration, and the significance of graph areas.

What is the total time taken for the car journey as described in the video?

• 150 seconds

• 200 seconds

• 100 seconds

• 50 seconds

How is the distance traveled related to the speed-time graph?

• It is the highest point on the graph.

• It is the area under the graph.

• It is the lowest point on the graph.

• It is the slope of the graph.

What is the velocity of the car calculated from the graph?

• 15 meters per second

• 30 meters per second

• 20 meters per second

• 25 meters per second

What is the acceleration during the first stage of the journey?

• 0.5 meters per second squared

• 1.0 meters per second squared

• 1.5 meters per second squared

• 1.25 meters per second squared

What happens to the car's speed during the second stage of the journey?

• It decreases.

• It increases.

• It remains constant.

• It fluctuates.

What is the nature of the gradient during the third stage of the journey?

• Zero gradient

• Positive gradient

• Undefined gradient

• Negative gradient

What are the two main pieces of information that can be derived from a speed-time graph?

• Acceleration and distance traveled

• Time and distance

• Speed and direction

• Velocity and time