Calculating Speed Without a Speedometer

The video tutorial introduces the concept of speed as the ratio of distance over time. It explains how to calculate speed using examples and demonstrates the use of graphs to represent speed changes. The tutorial covers constant speed, emergency stops, and how to analyze graphs to determine speed and distance. The video concludes with a summary of the key concepts discussed.

What is the basic formula for speed?

• Speed equals time over distance

• Speed equals distance over time

• Speed equals distance times time

• Speed equals time minus distance

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If you travel 50 km in half an hour, what is your speed?

• 100 km per hour

• 50 km per hour

• 25 km per hour

• 75 km per hour

On a graph, what does the vertical axis represent when calculating speed?

• Speed

• Distance

• Acceleration

• Time

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What does an upwards curve on a speed graph indicate?

• Decreasing speed

• Constant speed

• No movement

• Increasing speed

How can you tell when you've reached a constant speed on a graph?

• The curve is a straight line

• The curve is a zigzag line

• The curve is a downward slope

• The curve is an upwards slope

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What should you always keep a lookout for while driving?

• Speed limit signs

• Other vehicles

• Pedestrians

• All of the above

What is the benefit of making a graph of your journey?

• It shows the shortest path

• It helps you avoid traffic

• It allows you to calculate your speed at any point

• It helps you remember the route

How do you find the time during constant speed on a graph?

• Draw a line from the start to the end of the constant speed section

• Count the number of grid squares

• Measure the distance on the vertical axis

• Calculate the area under the curve

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If you travel 500 meters in 30 seconds, what is your speed in meters per second?

• 10 m/s

• 15 m/s

• 20 m/s

• 16.7 m/s

What happens to the graph line when you come to a stop but time is still ticking?

• It becomes a zigzag

• It becomes flat

• It slopes downwards

• It slopes upwards

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