A sprinting cheetah with a mass of 45 kg is running across the savanna. At its peak speed, the cheetah has 12 960 J12\ 960\text{ J}12 960 J of kinetic energy.
Calculate the velocity of the cheetah.
Use the equation:
kinetic energy=0.5×mass×velocity2 \text{kinetic energy} = 0.5 \times \text{mass} \times \text{velocity}^2 kinetic energy=0.5×mass×velocity282 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations. Each one has a worked solution and a mark scheme showing where the marks go.