An object decelerates from 22.0 m/s to 7.0 m/s in a time of 3.0 s.
It has a mass of 80 kg.
What is the magnitude of the resultant force on the object?
16 N16\text{ N}16 N
5.0 N5.0\text{ N}5.0 N
400 N400\text{ N}400 N
3600 N3600\text{ N}3600 N
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.