A Level Further Mechanics 1, Chapter 5 · exam-style questions with mark schemes · oblique impact of a smooth sphere with a fixed smooth wall or plane (the component along the wall unchanged, Newton's law of restitution across it), successive impacts with two walls, impacts in i and j and in vector form, oblique impact of two smooth spheres (conservation of momentum and restitution along the line of centres), impulses, kinetic energy lost and angles of deflection