10.1) a: Ared car travels $120km$ in one hour. A blue car travels $130km$ in the same time. Which car has the greater average speed?
b: Runner Atakes 45s to run $400m$. Runner B takes 48s to run the same distance. Which runner has the greater average speed?
c: A bus travels a distance of $100km$ in $2/5 h$. Calculate its average speed.
Give your answer in $km/h$.

10.2) A driver can work out her average speed using the instruments in her car.
The picture shows the clock and the distance meter at the beginning of a journey, and at the end. The distance meter gives the total distance travelled by the car in its lifetime, in kilometres.

a: How much time has passed between the beginning and end of the journey?
b: How far has the car travelled in this time?
c: Calculate the car's average speed during the journey. Show your working

10.3) A train is travelling at an average speed of $150km/h$.
a: How far will it travel in $2/4hours$? Show your working.
b: How long will it take to travel between two stations $525km$ apart?
Show your working

10.4) Here are three distance/time graphs, A-C.

a: Which graph represents the journey of a car moving at a steady speed?
b: Which graph represents the journey of a car whose speed is increasing?
c: The distance/time graph below represents the movement of two cars, blue and red.

Which car has the greater speed? Explain how you can tell.

10.5) The distance/time graph below represents part of the journey of a train.
Study the graph and answer the questions that follow.

a: How far did the train travel in $50s$?
b: Calculate the train's average speed. Show your working.