A particle of mass 0.8 kg has acceleration (−3i+5j)(-3\mathbf{i}+5\mathbf{j})(−3i+5j) m s−2^{-2}−2 under the action of a resultant force F\mathbf{F}F.
Find the angle between the acceleration and the vector i\mathbf{i}i.
Find the magnitude of F\mathbf{F}F.
136 exam-style questions on CCEA A Level Maths 2.3 Forces and Newton's laws, covering 2.3.1 Forces and Newton's laws, 2.3.2 Forces and Newton's laws, 2.3.3 Forces and Newton's laws, 2.3.4 Forces and Newton's laws, 2.3.5 Forces and Newton's laws, 2.3.6 Forces and Newton's laws, 2.3.7 Forces and Newton's laws, 2.3.8 Forces and Newton's laws, 2.3.9 Forces and Newton's laws, 2.3.10 Forces and Newton's laws, 2.3.11 Forces and Newton's laws, 2.3.12 Forces and Newton's laws, and 2.3 Forces and Newton's laws. Each one has a worked solution and a mark scheme showing where the marks go.