# Momentum and impulse – Further Maths Paper 2 Mechanics

Candidates should be able to:

• recall and use the definition of linear momentum, and show understanding of its vector nature (in one dimension only);
• recall Newton’s experimental law and the definition of the coefficient of restitution, the property $$0 \leqslant e \leqslant 1$$, and the meaning of the terms ‘perfectly elastic’ $$(e = 1)$$ and ‘inelastic’ $$(e = 0)$$;
• use conservation of linear momentum and/or Newton’s experimental law to solve problems that may be modelled as the direct impact of two smooth spheres or the direct or oblique impact of a smooth sphere with a fixed surface;
• recall and use the definition of the impulse of a constant force, and relate the impulse acting on a particle to the change of momentum of the particle (in one dimension only).