A runner of mass 80 kg has 250 J of kinetic energy.
What is their speed?
1.3 m/s1.3\text{ m/s}1.3 m/s
1.8 m/s1.8\text{ m/s}1.8 m/s
2.5 m/s2.5\text{ m/s}2.5 m/s
6.3 m/s6.3\text{ m/s}6.3 m/s
229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.