A student investigates how a trolley's acceleration depends on its mass. Which quantity should be kept constant?
The final speed of the trolley
The resultant force on the trolley
The mass added to the trolley
The acceleration of the trolley
103 exam-style questions on Edexcel GCSE Physics 2.3 Forces and Newton's laws, covering 2.3.1 Newton's first law, 2.3.2 Newton's second law, and 2.3.3 Weight and gravitational field strength. Each one has a worked solution and a mark scheme showing where the marks go.