A cyclist rides 600 m at an average speed of 10.0 m/s. She then rides another 600 m at an average speed of 15.0 m/s.
What is her average speed for the total distance of 1200 m?
6.0 m/s6.0\text{ m/s}6.0 m/s
12.0 m/s12.0\text{ m/s}12.0 m/s
12.5 m/s12.5\text{ m/s}12.5 m/s
25.0 m/s25.0\text{ m/s}25.0 m/s
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.