In mechanics problems, bodies, strings and surfaces are often described using standard modelling terms.
For each term below, state what the assumption allows you to neglect.
A horizontal surface is modelled as smooth.
An object is modelled as moving freely under gravity.
A string is modelled as light.
102 exam-style questions on WJEC A Level Maths 2.7 Kinematics, covering 2.7.1 Kinematics, 2.7.2 Kinematics, 2.7.3 Kinematics, and 2.7.4 Kinematics. Each one has a worked solution and a mark scheme showing where the marks go.