A runner is modelled as a particle moving in a straight line. The model predicts that she covers 100 m in 11.2 s.
Explain why treating the runner as a particle is reasonable when calculating her finishing time.
Explain why treating her acceleration as constant throughout the race is unlikely to be reasonable.
State one way in which the model could be refined.
85 exam-style questions on CCEA A Level Maths 2.2 Kinematics, covering 2.2.1 Kinematics, 2.2.2 Kinematics, 2.2.3 Kinematics, and 2.2.4 Kinematics. Each one has a worked solution and a mark scheme showing where the marks go.