GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Speed, Distance, Time - Explained

The video tutorial explains how to calculate the average speed of a sprinter who runs 200 meters in 25 seconds. It highlights the importance of understanding the key concepts of speed, distance, and time, and introduces the DST triangle as a helpful tool. The tutorial guides viewers through the process of using the formula for speed, ensuring the correct units are applied, and concludes with the final answer of 8 meters per second.

What is the distance covered by the sprinter?

• 100 meters

• 400 meters

• 300 meters

• 200 meters

Which of the following is NOT a keyword in the problem?

• Acceleration

• Time

• Distance

• Speed

What does the 'S' in the DST triangle stand for?

• Speed

• Space

• Strength

• Size

How do you calculate speed using the DST triangle?

• Speed = Distance / Time

• Speed = Distance x Time

• Speed = Time / Distance

• Speed = Time x Distance

What is the average speed of the sprinter in meters per second?

• 6 meters per second

• 9 meters per second

• 7 meters per second

• 8 meters per second