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

The video tutorial explains how to calculate average speed using Ollie's journey from Liverpool to Sheffield as an example. It covers the total distance and time taken, and demonstrates the calculation of average speed. The tutorial also analyzes Janie's journey from Barnsley to York, discussing the implications of calculating average speed as the mean of two speeds.

What was the total distance Ollie traveled from Liverpool to Sheffield?

• 56 kilometers

• 117 kilometers

• 61 kilometers

• 70 kilometers

How is average speed calculated?

• Total distance multiplied by total time

• Average of speeds for each segment

• Total distance divided by total time

• Total time divided by total distance

What was the total time taken for Ollie's journey from Liverpool to Sheffield?

• 0.8 hours

• 75 minutes

• 2.05 hours

• 1.25 hours

What was Ollie's average speed for his entire journey?

• 80 km/h

• 57.07 km/h

• 61 km/h

• 70 km/h

What assumption is made if Janie's average speed is calculated as the mean of two speeds?

• The journey is in a straight line

• The speed for both segments is equal

• The time taken for both segments is equal

• The distances for both segments are equal

What is Janie's average speed from Barnsley to Leeds?

• 70 km/h

• 80 km/h

• 90 km/h

• 60 km/h

If Janie's average speed is the mean of 80 km/h and 60 km/h, what does this imply about the distances?

• The distance from Leeds to York is half of Barnsley to Leeds

• The distance from Leeds to York is 3/4 of Barnsley to Leeds

• The distance from Leeds to York is equal to Barnsley to Leeds

• The distance from Leeds to York is double Barnsley to Leeds