Dynamics

Forces and Newton's LawsSign up

be able to draw and interpret free-body force diagrams to represent forces on a particle or on an extended but rigid body using the concept of centre of gravity of an extended body · be able to use the equation sum(F) = ma, and understand how to use this equation in situations where m is constant (Newton's second law of motion), including Newton's first law of motion where a = 0, objects at rest or travelling at constant velocity. Use of the term 'terminal velocity' is expected. · be able to use the equations for gravitational field strength g = F/m and weight W = mg · CORE PRACTICAL 1: Determine the acceleration of a freely-falling object · know and understand Newton's third law of motion and know the properties of pairs of forces in an interaction between two bodies

Momentum and ImpulseSign up

understand how to use the equation impulse = F t = p (Newton's second law of motion) · CORE PRACTICAL 9: Investigate the relationship between the force exerted on an object and its change of momentum · understand how to apply conservation of linear momentum to problems in two dimensions · CORE PRACTICAL 10: Use ICT to analyse collisions between small spheres, e.g. ball bearings on a table top · understand how to determine whether a collision is elastic or inelastic · be able to derive and use the equation Ek = p^2 / 2m for the kinetic energy of a non-relativistic particle