A crate of mass 15 kg is pushed horizontally with a force of 80 N. The crate accelerates at 1.2 m/s2. What is the magnitude of the frictional force acting on the crate?
18 N18\text{ N}18 N
62 N62\text{ N}62 N
80 N80\text{ N}80 N
98 N98\text{ N}98 N
183 exam-style questions on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one has a worked solution and a mark scheme showing where the marks go.