A train travels 240 km. The journey takes three hours. The highest speed of the train is 110 km/h, and the lowest speed is 70 km/h. What is the average speed for the journey?
70 km/h70\text{ km/h}70 km/h
80 km/h80\text{ km/h}80 km/h
90 km/h90\text{ km/h}90 km/h
120 km/h120\text{ km/h}120 km/h
204 exam-style questions on CIE IGCSE Physics Motion, covering Motion. Each one has a worked solution and a mark scheme showing where the marks go.