The video tutorial explains how to read and interpret distance-time graphs, focusing on the relationship between distance and time, and how the gradient represents speed. It uses a practical example of a journey from Bristol to Cardiff to illustrate concepts like constant speed, rest periods, and returning to the starting point. The tutorial also covers calculating speed using the gradient and identifying specific distances on the graph.

What is represented on the y-axis of a distance-time graph?

• Speed

• Distance

• Time

• Velocity

What does the gradient of a distance-time graph represent?

• Distance

• Acceleration

• Speed

• Time

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

• Rest

• Deceleration

• Constant speed

• Acceleration

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

• Increasing speed

• Returning home

• Resting

• Constant speed

At what time did Sally and Debbie start their journey from Bristol?

• 3:00 PM

• 2:00 PM

• 12:00 PM

• 1:00 PM

How far is Cardiff from Bristol?

• 90 kilometers

• 70 kilometers

• 50 kilometers

• 30 kilometers

How long did Sally and Debbie stay in Cardiff?

• 2.5 hours

• 2 hours

• 1.5 hours

• 1 hour

What was the speed of Sally and Debbie's journey home?

• 47 km/h

• 50 km/h

• 40 km/h

• 30 km/h

Tags

NGSS.MS-PS3-1

At what time were Sally and Debbie 40 kilometers from home on their way out?

• 1:15 PM

• 4:15 PM

• 2:15 PM

• 3:15 PM

At what time were Sally and Debbie 40 kilometers from home on their return journey?

• 4:15 PM

• 3:15 PM

• 2:15 PM

• 1:15 PM