Which of the following individuals is experiencing acceleration?
a child riding a carousel horse that is moving in a circle at a constant speed
a passenger sitting on a bus that is stationary at a red light
a skier sliding down a gentle slope at a constant, steady velocity
a hot-air balloon floating stationary at a fixed altitude in calm air
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.