At touchdown, a light aircraft has 0.90 MJ0.90\ \text{MJ}0.90 MJ of energy in its kinetic energy store.
The wheel brakes exert an average braking force of 6.0 kN6.0\ \text{kN}6.0 kN for the first 60 m. The average braking force then decreases to 3.0 kN3.0\ \text{kN}3.0 kN until the aircraft stops.
All the energy in the kinetic energy store is transferred by the work done by the braking forces.
Calculate the total distance travelled by the aircraft while braking.
113 exam-style questions on AQA GCSE Physics 5.2 Work done and energy transfer, covering 5.2 Work done and energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.