Average speed- Mental Starter (Kayla)

A passenger plane left New York and flew east. A jet left one hour later flying at 280 km/h in an effort to catch up the passenger plane. After flying for seven hours, the jet finally caught up. Find the passenger plane’s average speed.

(a)  

What is the formula for average speed?

Runner A ran 12 miles in 4 hours and Runner B ran 9 miles in 3 hours. Which runner had the greatest average speed?

20 km in $$\frac{1}{4}$$  hour Calculate the average speed of this vehicle in kilometres per hour.

15 km in $$\frac{1}{2}$$  hour Calculate the average speed of this vehicle in kilometres per hour.

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