Newton’s three laws of motion
forces as interactions between bodies
that forces acting on a body can be represented in a free-body diagram
that free-body diagrams can be analysed to find the resultant force on a system
the nature and use of the following contact forces (normal force, frictional forces, elastic restoring force, viscous drag, buoyancy)
the nature and use of the following field forces (gravitational force, electric force, magnetic force)
that linear momentum as given by p = mv remains constant unless the system is acted upon by a resultant external force
that a resultant external force applied to a system constitutes an impulse J as given by J = FΔt where F is the average resultant force and Δt is the time of contact
that the applied external impulse equals the change in momentum of the system
that Newton’s second law in the form F = ma assumes mass is constant whereas F = Δp Δt allows for situations where mass is changing
the elastic and inelastic collisions of two bodies
explosions
energy considerations in elastic collisions, inelastic collisions, and explosions
that bodies moving along a circular trajectory at a constant speed experience an acceleration that is directed radially towards the centre of the circle—known as a centripetal acceleration as given bythat circular motion is caused by a centripetal force acting perpendicular to the velocity
that a centripetal force causes the body to change direction even if its magnitude of velocity may remain constant
that the motion along a circular trajectory can be described in terms of the angular velocity ω which is related to the linear speed v by the equation as given by the equation in the data book.